Answer:
please I don't understand your question
Answer:
Should be true
Explanation:
Which organism would be classified as an arthropod? crab starfish snail earthworm
Answer: Crab, because an arthropod has no spine but an external skeleton.
help plz ASAP!
Which statement BEST describes what has happened to most of the species
that have ever lived on Earth?
A) They are alive today.
B) They are now extinct.
C) They were killed by humans.
D) They were turned into fossils.
The northern spotted owl livesin old growth forests in North America. These types of forests are relatively rae because most have been cut down by humans for timber.
Which factor makes the northern spotted owl most likely to become extinct?
A.) low adaptability
B.) high population size
C.) high variation in its populations
D.) low amount of contact with humans
The black howling monkey is threatened with extinction as a result of deforestion, which occurs when humans cut down or burn forests to convert them to another use.
Which of the following BEST describes why this species may become extinct?
A.) loss of habitat
B.) high adaptability
C.) hunting by humans
D.) low population size
Which two factors contributed to the extinction of many large mammals over the last several million years, including wooly mammoths, saber-toothed cats, and giant ground sloths?
A.) loss of habitat and contact with humans
B.) loss of habitat and low variation in population
C.) low population size and a warming environment
D.) a warming environment and contact with humans
Answer:
1:B) They are now extinct. 4:A.) loss of habitat and contact with humans
2: B.) high population size
3: A.) loss of habitat
acteriophages were labeled with radioactive phosphorous (32P) and sulfur (35S). The labeled bacteriophages were then allowed to infect their host cells. At the end of the experiment, the 32P label was found only inside the host cells and the 35S label was found only outside the host cells. This experiment shows that:
Answer:
They concluded that DNA is a genetic material.
Explanation:
This experiment shows that the DNA is genetic material. For performing experiments, the DNA of bacteriophages is labelled with radioactive phosphorous (32P) and proteins were labelled with sulfur (35S) in order to detect the action of bacteriophages. The bacteriophages attack on the bacteria by inserting its DNA in the bacteria. We can see this because radioactive phosphorus is present in DNA of bacteriophages while the protein did not enter into the bacteria and remain outside the cell and we can see it because protein is made up of sulphur.
why most vaccines have to be given by injection?
Consider the phylogenetic tree. A phylogenetic tree is shown. The root of the tree is dinosaurs and birds. The branches are crocodiles, primates, amphibians, ray-finned fish, and shark. Which two organisms are most closely related, based on the tree above? ray-finned fishes and sharks rodents and primates dinosaurs and crocodiles dinosaurs and birds
Answer:
dinosaurs and birds
Explanation:
Dinosaurs and birds are considered as the most closely related species to one another because they are evolved from a common ancestor. They show resemblance in many ways such as physical structure, both dinosaurs and birds moves on two feets etc. In phylogenetic tree, dinosaurs and birds are the roots from which other organism evolved. So that's why dinosaurs and birds are considered the most closely related species living on earth.
The organisms that are most closely related (based on the tree above described) are dinosaurs and birds.
Evolution and phylogenetic treesEvolution refers to the natural process of descendence with modification, which is mainly due to natural selection.
Evolution leads to speciation, thereby species are related and they show evolutionary relationships.A phylogenetic tree is a diagram that represents evolutionary relationships between species that share a common ancestor.In conclusion, the organisms that are most closely related (based on the tree above described) are dinosaurs and birds.
Learn more about phylogenetic trees here:
https://brainly.com/question/8188690
first person to answer give you Brainliest
In the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of years as a result?
The chances for survival of the population are reduced. New food sources are discovered and become the regular diet. Individuals that are well suited to the environment reproduce, and those that are not well suited die before they reproduce. The environment adapts by providing more resources to the growing population, increasing the chances of survival for individuals within the habitat.
Answer:
Individuals that are well suited to the environment reproduce, and those that are not well suited die before they reproduce.
Answer:
Answer:
Individuals that are well suited to the environment reproduce, and those that are not well suited die before they reproduce.
Explanation:
Which of the following statements is true of osmosis? (Hint: remember my slug example in the Zoom class!) a. Water moves from an area of high concentration of water molecules across a semi-permeable membrane to an area of lower concentration of water molecules. b. Water moves from an area of lower concentration of water molecules across a semi-permeable membrane to an area of high concentration of water molecules. c. Water moves from higher concentration of salt molecules across a semi-permeable membrane to lower concentration of salt molecules. d. Both b and c e. Both a and c
Answer:
a. Water moves from an area of high concentration of water molecules across a semi-permeable membrane to an area of lower concentration of water molecules.
Explanation:
Osmosis is a physical phenomenon in which solvent molecules move through a semi-permeable membrane from a region with low solute molecules concentration to a region with high solute molecules concentration. Or in order word, osmosis is the flow of solvent molecules (example is water) through a semi permeable membrane, from a region of higher concentration, to a region of lower concentration of water molecules. Example of osmosis is the biological flow of water molecules into or out of the body cells through the cell walls, in response to the difference in the concentration of salts and minerals within and outside the cell wall.
what are body building food
Answer:
Proteins
Explanation:
Red meat, peanut butter, protein shakes etc
Answer:
just go on a dirty or clean bluk
Explanation:
Which is a tough and rigid layer that surrounds plant cells, as well as some algal and bacterial cells?
Answer:
its A cell wall
Explanation:
Differentiate between blood recipient and blood donor
Answer:
A blood donor is a person who donates blood and a blood recipient is a person who receives donated blood.
Explanation:
Which phrase describes one type of freshwater wetland? Acidic areas found in northern climates Reservoirs created by dams at the end of rivers Areas of high elevation that feed into river systems Small streams that flow into larger streams and wetlands
Answer:
The correct answer is - Small streams that flow into larger streams and wetlands
Explanation:
Freshwater wetlands are territories where soil is covered by standing water or a territory where the ground is wet. In contrast to estuaries, freshwater wetlands are not associated with the sea. They can be found along the limits of streams, lakes, lakes. Freshwater wetlands are profoundly beneficial situations that help a bounty of micro-invertebrates, crustaceans, fish, frogs and water birds.
There are 4 fundamental sorts of Freshwater Wetlands, Ponds, Marshes, Swamps, and Peat lowlands. A Marsh is generally found close to a stream, lake or flowing waters.
Thus, the correct answer is - Small streams that flow into larger streams and wetlands.
The water that contains the minimum amount of salt dissolved in it is called freshwater. The freshwater wetland consists of swamps, marshes, ponds and bogs.
The correct option is:
Option D. Small streams that flow into larger streams and wetlands.
This can be explained as:
The soil region that is covered with standing or flowing water is called freshwater wetlands.They can be found along streams, rivers and ponds.This type of wetland comprises many small fishes, invertebrates, frogs and birds.Therefore, marsh is the small streams that flow into larger streams.
To learn more about freshwater wetlands follow the link:
https://brainly.com/question/1876228
a certain kind of plant can have green leaves (G) or yellow leaves (g) and can also have blue flowers (B) or white flowers (b). when a plant with the GgBb genotype produces pollen, what genotypes will be found among the pollen grains? A. Only GB and gb B. Gg, GG, BB, and bb C. GB, Gb, gb, and gB D. Only GB and Gb
Answer:
C. GB, Gb, gb, and gB
Explanation:
which question is most closely related to the field of biology? what is the nearest planet to earth? How many planets are there in the solar system? What is the cause of cancer in mice? How do you design a cheaper automobile?
the most closely related question to biology is what is the cause of cancer in mice and the answer is simian virus
How many planets are there in the solar system? What is the cause of cancer in mice? This question is most closely related to the field of biology.
Define the field of biology?Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology.
Is biology a good career?Biology is a well-respected degree choice and offers the chance to get up close and personal with all matters of human, animal, and cell life. Biology degrees contain a wide variety of modules, ensuring that you can study something that really interests you and making it a good choice for keen scientists.
Learn more about the field of biology here: https://brainly.com/question/17259533
#SPJ2
The number of chromosomes during meiosis is incredibly important.why is that?
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes, Meiosis also produces genetic variation by way of the process of recombination.
I hope this helps you
Meiosis refers to the process by which a single cell divides twice to produce four haploid daughter cells. These are the gametes, which are sperms in males and eggs in females.
Why the number of chromosomes is important during meiosis?Meiosis is a eukaryotic cell division process. However, the genetic material distributed among the resulting daughter cells is distributed in very different ways by these two processes.
Mitosis results in the formation of two identical daughter cells, each with the same number of chromosomes as the parent cell.
Meiosis, on the other hand, produces four distinct daughter cells, each with half the number of chromosomes as the parent cell.
Because meiosis generates cells that will become gametes (or reproductive cells), this reduction in chromosome number is critical; without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes.
Thus, we can conclude that the number of chromosomes during meiosis is incredibly important because It allows gametes to have half the original number of chromosomes of the organism.
You can learn more about meiosis here:
https://brainly.com/question/8253366
#SPJ2
What connection do all living things have with each another
Answer:
they all have cells
Explanation:
each living thing has cells that help them survive and help their body work well.
Answer:
All organisms need food for the energy required to live and grow. They all excrete (get rid of) waste products, and detect changes in their surroundings and respond to them. All living organisms follow a LIFE CYCLE of growth and development, reproduction, and death. One thing all living things have in common is that all living things have cells, performing the functions necessary for an organism to survive in its environment; even the most primitive of life forms, bacteria, consists of a single cell. All living things also use energy, grow and reproduce.
During a routine physical exam of a child, the nurse notes an abdominal mass, elevated blood pressure and hematuria. The parents report abdominal pain, fatigue and recent fevers. Which lab value would prompt immediate further investigation and intervention?
Answer:
The signs that indicate immediate intervention would be a constant body temperature greater than 39 degrees, a decrease in blood pressure and heart rate, a decline, difficulty breathing, loss of consciousness.
If the chest pain increases, and the transaminase values also (liver evaluation) are also considered to be risk signs.
Explanation:
All these risk signs would be potentially lethal for the child but much faster than an adult, since it was found that children trigger acute lethal symptoms in less time, which is why the treatment should be done quickly and if possible As invasive as possible to reverse the picture.
why is rna shorter than DNA?
Answer:
RNA is much shorter than DNA. DNA contains the code for making lots and lots of different proteins as well as DNA contains all the genetic in formation of the body whereas RNA does not contains
Explanation:
i hope this will help you :)
2 Points
Which would be an adaptation in a very cold place, but not in a rainforest?
A. Special veins that keep you cool
B. Leaves for flying faster
C. Strong teeth for fighting competitors
D. Fur that blends in with snow
Answer: D
Explanation:
The adaptation that would be in a very cold place, but not in a rainforest, is fur that blends in with snow. The correct option is D.
What is adaptation?
Adaptation is a long-term or short-term change or modification of the body to survive and match the environmental conditions. Adaptation is necessary for every organism to increase its population.
Adaptation is categorized into different types according to the places where animals and plants live. Examples of adaptation are desert plants having thick leaves or no leaves to save water, and snow animals being white to blend in.
The animals living in very cold regions, like the arctic and Antarctica, have white fur to blend with the environment and save from predators.
Thus, the correct option is D. Fur, which blends in with snow.
Learn more about adaptation, here:
https://brainly.com/question/12534888
#SPJ5
What is true about the most recent ice age?
O A. All life on Earth became extinct.
O B. It occurred during the Precambrian era.
O C. Sea levels rose over 300 feet.
D. Land bridges existed that are now underwater.
The truth about the last ice age: D. There was now a submerged overpass.
An ice age also called an ice age, is a geological period in which thick ice sheets cover vast land areas. These massive ice ages could last for millions of years and could radically change the surface topography of entire continents.
There have been several major ice ages in Earth's history. The amount of sunlight reaching Earth over thousands of years varies considerably, especially at the North Pole and its surrounding northern latitudes. When less sunlight reaches northern latitudes, temperatures drop, more water freezes into ice, and the Ice Age begins. This ice age began about 2.6 million years ago in a period known as the Pleistocene epoch and lasted until about 11,000 years ago. Like everything else, the Last Ice Age brought about a series of glacial advances and retreats. In fact, we are technically still in the Ice Age.
Learn more about the ice age here: https://brainly.com/question/1372410
#SPJ1
What can a person do to limit exposure to X-rays?
Distance and shielding can protect a person from X Ray radiation. An example could be how X Ray technicians go into a room that’s away from you whenever you get an x ray at a hospital. Distance is effective because it can reduce exposure. Hope this helped!
Answer:
To limits exposure of X-rays, One can do the following things:
1) Use a protective shield through which X-Rays can't pass.
2) Prevent X-rays as much as u can.
3) Don't go to places where you doubt the presence of X-Ray Radiations.
4) If not needed, Don't do CT scan.
please help me with this I need correct answer
Answer:
Gamma rays
X-rays
Ultraviolet
Visible Light
Infrared
Microwaves
Radio waves
Answer: from shortest wave length to longest it would be
gamma
x-ray
ultraviolet
visible light
infrared
microwave
radiowave
Explanation:
from the longest to shortest it will be :
Radio wave , Microwave, infrared , visible light , ultraviolet , x-ray , gamma
and you can menomeic it as : "Rabbits Mate In Very Unusual eXpensive Gardens "
Analyze the image below and answer the question that follows. Which line is pointing to the myelin sheath? A. 1 B. 2 C. 3 D. 4 Please select the best answer from the choices provided A B C D
Answer:
d.4 i do believe :)......
The given image is a neuron. Neurons are present in the nervous system. The part which is labelled as 4 in the diagram is myelin sheath. Thus, the correct option is D.
What is a Nerve cell?A nerve cell is a specialized cell which makes the nervous system. This system is responsible for the control of functions in an organism. Neuron (nerve cell) are the basic units of the nervous system.
A nerve cell consists of three parts- the cell body, a major branching fiber which is an axon and smaller branching fibers known as dendrites. The axon has nodes of Ranvier and myelin sheath. The nodes of Ranvier are the gaps which are present in the myelin sheath that coats the neural axon. The myelin sheath permits electrical impulse to move down the axon in a neuron. The nodes of Ranvier allow movement of ions in and out of the neuron that helps in propagation of electrical signals down the axon of the nerve cell.
Therefore, the correct option is D.
Learn more about Neuron here:
https://brainly.com/question/24217914
#SPJ5
Which organelles are found only in plant cells and not in animal cells?
Answer:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells. The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.
What basic unit of heredity is found on segments of DNA and are passed on from parent to offspring?
Answer:
Genes
Explanation:
Genes are sequences of nucleotides that determine characteristics. They are passed from parents to offspring.
Gene is basic unit of heredity is found on segments of DNA and are passed on from parent to offspring.
What are the characteristics of gene ?A gene is physical and functional unit of heredity which is made up of DNA.
Genes control both DNA and RNA function.
Some genes codes protein for functional expression of a trait where as some genes do not code for proteins.
In humans, the size of genes ranges from few hundred DNA bases to more than 2 million bases and human have between 20,000 and 25,000 genes.
Each gene have two copies, one is passed from each parent. Only 1 percent of the total genes is slightly different between people.
This is because of presence two different types of allele the same gene which contribute to each person’s unique physical features.
Learn more about gene, here:
https://brainly.com/question/27778777
#SPJ6
Why do droughts contribute to desertification?
Answer:
Drought and desertification are firmly related phenomenon. Continuing over months or years, drought can influence enormous zones and may have genuine ecological, social and financial effects.
While drought is a characteristic phenomenon, whose effects can be exacerbated by human exercises that are not adjusted to the neighborhood atmosphere, land debasement is the way toward transforming fruitful land into less or non-gainful land. In extraordinary cases in drylands this is called desertification.
Land debasement and desertification are complex phenomenon driven by un-adjusted human action in mix with land and climatic requirements. Improper land use, for example, monocultures, and unreasonable land the board rehearses, for example, deforestation, unsatisfactory agrarian practices and overexploitation of water assets), can cause land debasement that can be additionally disturbed by drought.
What does a seed contain? a plant embryo and pollen grains the female reproductive organs a plant embryo and stored food the male reproductive organs
Answer:
A plant embryo and stored food
Please mark my answer as brainliest
marrisa and seaan are in the process of adopting a baby. One of the documents the adoptionsgency provides is a full medical history of the birth mother. Why would the birth father's medical history also be important?
Answer:
The father's medical history is a record of the diseases and health conditions of the Father. The Father and child are family members who share genes.
Explanations:
They may also have some health conditions in common.
Answer:the fathers medical is record as a disease fois a health situation
Explanation:
Hypothesize about tumor growth. Scientists have shown that tumor growth is an example of positive feedback loops. Why is tumor growth an example of positive feedback? In your answer elaborate using the following terms stimulus, receptor, control center, effector, response.
Answer:
The connection between cancer cells stimulates uncontrolled proliferation and tumor growth
Explanation:
In the tumor, cancer cells are interconnected by different types of proteins, which may act as receptors or amplify oncogenic signals. For example, in breast cancer, it has been shown that oncogenic cells are often connected through E-cadherin proteins that mediate their adhesion, thereby stimulating the cell movement and invasion (characteristic of tumor metastasis). In this case, E-cadherin membrane proteins function by enhancing effector response in cancer cells. The nucleus acts as the control center of the cell that modulates the expression of tumor suppressor genes in order to inhibit tumor metastasis.
Which of the following processes is increased when many trees are removed
from an area?
A. Runoff
B. Percolation
C. Transpiration
D. Photosynthesis
Answer:
B
Explanation:
Select the correct answer from each drop-down menu. Temperate grasslands and (blank) are two biomes that are dominated by grass species, share similar wildlife, and have few (blank). However, while temperate grasslands have (blank), the other grassland biome has (blank) .
Answer:
The answer is hot ,mammals
Answer:
Temperate grasslands and tropical savannas are two biomes that are dominated by grass species, share similar wildlife, and have few trees . However, while temperate grasslands have hot summers and cold winters , the other grassland biome has both rainy and dry seasons .