Only 3% if the water ib Earth us freshwater. About 2/3rds of that water is not available for
humans use because ..
Answer: 2/3 of the water is not availible for human use because it is salt water not fresh.
Explanation:
What will occur if a species is divided into two groups and allowed to reproduce in different environments for many generations?
Answer:
The original species will diverge into two new species. It will occur speciation. It will occur some sort of allopatric speciation.
Explanation:
When the original species is divided and placed under different environments, where they can reproduce for many generations, many changes or mutations will occur in each group. These changes will depend on each group´s environment and its ecological pressures and will lead to divergence. Pressures act on individuals and make them adapt to the new environmental conditions. Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.
The biological concept of species states that individuals of the same species can reproduce because they have a genetic reservoir in common: many genetic variants.
Genetic variability is the measure of a species organism´s tendency to differentiate. In genetic variability, individuals of the same species are not identical. They are recognizable as members of the same species, but they differ in shape, function, and behavior. There exist variations among individuals of the same species.
Genetic variability originates from mutations, recombinations, and karyotype alterations. It allows or makes possible evolution.
Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.
The process of allopatric speciation involves different steps:
• The emergence of the barrier.
• Interruption in the genetic interchange
• The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
• Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
• Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.
Answer:
divergence, potentially giving rise to two different species
Let's bring what you have learned about the carbon cyde, photosynthesis, and cellular respiration and show how they are connected work together in an ecosystem. Play the role of a carbon atom in an ecosystem. Start with the production, how are they made? And then explain how they transform through different processes. Make sure to include your role in the carbon cycle, photosynthesis, and cellular respiration. There is no set length as long as you explain the role of carbon in each process
Answer:
Humans are one of the important contributor for CO2 (Carbon Dioxide) Production. In our body, carbon dioxide is formed intracellularly as a byproduct of metabolism. Carbon Dioxide is transported in the bloodstream to the lungs where it is ultimately removed from the body through exhalation. This process is called Respiration generally Cellular Respiration.
And in Photosynthesis, the exhaled CO2 from human body ( or any other living organisms) are being used as the reactant (with the H2O) then produces Glucose (energy source of plants) and Oxygen (living organisms need to survive). This process takes place in chloroplasts, which contain the chlorophyll.
To sum up, carbon cycle is the process in which carbon travels from the atmosphere into organisms and the Earth and then back into the atmosphere. Plants take carbon dioxide from the air and use it to make food. Animals then eat the food and carbon is stored in their bodies or released as CO2 through respiration.
Therefore, without living organisms there are no carbon dioxide, oxygen and other gases will be produce same as without non-living organisms like gases, the sun, water and etc. human race and other organisms can't survive. And there will be no ecosystem.
Astronomers have two ways of measuring the brightness of a star, apparent magnitude and absolute brightness. Which statement best explains the difference between apparent magnitude and absolute brightness?
Answer:
Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs. (A light-year is the distance light travels in one year — about 6 trillion miles, or 10 trillion kilometers.) Astronomers also measure luminosity — the amount of energy (light) that a star emits from its surface.
HELP ASAP
how many amu is there for salt
Answer:
One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams.
Explanation:
For the below image label the 13.polar area and 14. Non polar area on the diagram
Answer:
http://images.pcmac.org/SiSFiles/Schools/AL/MobileCounty/CauseyMiddle/Uploads/DocumentsCategories/Documents/NBp10_Cell_Transport_-_Amoeba_Sisters_%7BSIS5384FB64E650%7D.pdf
use this link, you will find the answer
Explanation:
PLEASE HELP I WILL MARK BRAINALIST
Answer:
I think d
Explanation: it makes sense
Answer:
no it is A
Explanation:
will a point mutation or a frameshift mutation have a larger impact on the protein coded for by the DNA?
Answer:
frameshift mutation (i think)
Explanation:
because it messes up the whole strand by deleting or inserting a base. honestly not 100% sure so take this with a grain of salt lol
WILL GIVE BRAINLIEST
Which of the following lifestyle modifications is NOT likely to be helpful in controlling genetically linked diseases?
A) taking a healthier diet
B) exercising regularly
C) maintaining a proper weight
D) planning to quit smoking at 40
E) regulary having medical check ups
Answer:
E) regularly having medical exams
Explanation:
Hope this helps!!
Answer:
D) Planning to quit smoking at 40
Explanation:
Urgent!! Why is it important to make exact copies of cells?
Answer:
Producing exact copies ensures that when a cell divides, the offspring cells will receive the same genetic information as the parent cell. cancer can result when errors in the replication of DNA in genes that control how a cell divides.
Explanation:
hope this helps...
have a nice day
At which part of the cell are electrical signals transmitted between nerve cells?
soma
axon
myelin sheath
dendrite
Dendrite is regarded as the part of the cell in which electrical signals are
transmitted between nerve cells.
Dendrites receive signals or communication from other cells and help to
transport the electrochemical charge from other neurons to the cell body or
axons which conduct them to the central nervous system for processing.
Dendrites have also been found to release neurotransmitters which makes
their study more complex and diverse.
Read more about Dendrites here https://brainly.com/question/1065934
sooooooooooooooooooo
Sooooo can some body solve this if ur smart:
:)
Q1. (2 ²∕⁵ x 3 ¹∕⁸) x 3¹∕⁵ ÷ 3¹ also : Q2. A shopkeeper has 12 dozen eggs he sold 2/3 (two upon three) of the eggs everyday Find the total number of eggs he sold and how many eggs were left?
answer for Q1) 8
answer for Q2) 216 eggs per day you find the other answer and show the step by step for both questions.
WILL MARK BRAINLYEST
PLEASE HELP WITH THIS
Answer:
Active transport:
- Diffusion (one to far left)
- Facilitated diffusion (the one with glucose)
- Osmosis (the one with water)
Passive transport:
- Protein pump (one to far right)
What factors limit the size of a cell?
Answer:
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shape.
Explanation:
I hope this helps you!
how do plants move carbon from the atmosphere
what do you mean by sick?
Answer:
Sick usually means physically ill, but it can sometimes be used to mean mentally ill. He's very sick. He needs medication. She found herself with two small children, a sick husband, and no money.
Explanation:
can I get brainlist
Answer:
Sick usually means physically ill, but it can sometimes be used to mean mentally ill. He's very sick. He needs medication. She found herself with two small children, a sick husband, and no money. He was not evil, but he was sick.
What is the probability of a child having type AB blood if one of her parents is heterozygous for A blood and the other is heterozygous for B?
Answer:
25% chance
Explanation:
Well if you make a cross, you put in AO and BO
A O
B AB BO
O AO OO
I hope this helps!
Answer:
25%
Explanation:
pls helps will reward brainliest
Answer: intercalary meristem
Explanation: meristematic tissue at the base of the leaf blade is ben to the plant growth
Explain how an individual DNA mutation can become an adaptation in a population
Answer:
Explanation: Genetic variations that alter gene activity or protein function can introduce different traits in an organism. ... Over time, as generations of individuals with the trait continue to reproduce, the advantageous trait becomes increasingly common in a population, making the population different than an ancestral one.
Answer:
Due to the process of natural selection they gene can be matched and shown I need the offspring.
Explanation:
A botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree. What should the botanist do first to study the interaction of these organisms in the ecosystem?
A. Remove the beetle population from the tree, and study them in the lab.
B. Identify the species of the beetle and the species of both trees.
C. Determine why the beetle is eating one tree but not the other.
D. Recommend a treatment that will keep the beetles from eating the trees.
ANSWER: B. identify the species of the beetle and the species of both trees (quizlet)
Answer: It's B,
"Identify the species of the beetle and the species of both trees."
The botanist should firstly study the interaction of these organisms in the ecosystem by identifying the species of the beetle and the species of both the trees. Therefore, the correct option is B.
What are species?A species is a group or organisms that can interbreed and produce viable offspring. The concept of species is used to define a unique type of organism, and it is the basic unit of biological classification.
Species are considered to be different from one another if they are unable to interbreed and produce offspring that can survive and reproduce. This definition of species is known as biological species concept.
In the case given in the question, the botanist should first identify the species of both the beetles and the trees. Then try to deduce a relationship between them which could clarify that the reason of the beetles feeding on those specific trees. Hence, the correct option is B.
For more details regarding species, visit:
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An earthworm helps to break up soil so that the roots of plants may receive oxygen. This enriches the soil and provides food for other organisms. What do these characteristics describe about the earthworm?
the answer is its niche
this is because a niche refers to the position or function that an organism occupies within its environment among other species of plants and animals.
hope this helped xoxo
If the probability of death is high early in an individual's life, we would predict
a young age for first breeding attempt
little to no parental care
great number of young produced at each breeding attempt
all of the above
none of the above
Answer:
All of the above.
Explanation:
Select the correct answer.
Which degree of latitude designates the position of the equator?
A.
0
B.
45
C.
90
D.
120
Answer:
A
Explanation:
why is the vegetation at the bottom of mountains generally not the same as vegetation found at higher altitudes on mountains
How can ecosystems benefit from wildfires
Answer:
Fires often remove alien plants that compete with native species for nutrients and space, and remove undergrowth, which allows sunlight to reach the forest floor, thereby supporting the growth of native species. ... Overall, fire is a catalyst for promoting biological diversity and healthy ecosystems.
Explanation:
If all cells in your body contain the same set of DNA, why is it that some cells become muscles calls, some become skin, or nerve cells?
Answer:
This is due to CELL DIFFERENTIATION
Explanation:
All living cells are made up of the genetic material called DNA, which are exactly of the same sequence across all cells. However, the cells that contain the same DNA sequence are different in function.
This is as a result of a process called CELL DIFFERENTIATION, which is the process whereby cells specialize or become specific in function as a result of the expresssion or not of certain genes in the DNA sequence of each cell. In other words, cells might contain same DNA sequence but the genes are not all expressed at the same time, leading to the different function. Therefore, some cells become muscle cells, skin, or nerve cells with different functions.
Water cycle -
When water is removed from the soil and subsurface
water flows via roots to be used by the plant. Most of
the water that plants uptake passes though into the
atmosphere.
Answer:
This is the process of transpiration because it has to do with plants!
Which historic human disease has a life cycle and transmission flow illustrated above?
A) HIV
B) Plague
C) Cholera
D) Middle East Respiratory Syndrome
Answer: Plague
Explanation: it’s transmitted through fleas
Scientific Discoveries
3. An important clue to the structure of DNA was provided by
A. a protein analysis of a muscle cell.
B. an X-ray diffraction photograph of DNA.
C. an MRI image of a brain cell.
D. a microscopic examination of a fruit fly.
Check Answer
Answer:
B
Explanation:
I got it right :D
An important clue to the structure of DNA was provided by an X-ray diffraction photograph of DNA. Thus, the correct option is B.
What is X-ray diffraction?X-ray diffraction (XRD) is a widely used technique to assess the crystallinity and structure of the solid samples such as biomolecules like DNA and proteins. The crystal X-ray diffraction phenomenon results from the scattering process in which the X-rays are scattered by the electrons of the atoms which are present in the sample without any change in the wavelength.
Rosalind Franklin's X-ray diffraction method patterns of the DNA molecules rendered the important clue from which DNA has the structure of a double helical structure. The most famous X-ray photograph, the Photo 51 is still printed in most of the Biology textbooks.
Therefore, the correct option is B.
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The arrows in a food chain point from the organism ____________ the energy to the organism ___________ the energy
Answer:
1. Supplying
2. Taking
Explanation:
Food chain is a linear relationship between organisms that depicts the flow of energy from one organism to another. In a food chain, organisms are arranged in trophic levels where arrows pointing to the right direction (➡) are used to show that the organim the arrow is pointing to eats the organism behind it.
Hence, according to this question, arrows in a food chain point from the organism SUPPLYING the energy to the organism TAKING the energy.