Answer: Mutation. The allelic variations that make evolution possible are generated by the process of mutation, but new mutations change gene frequencies very slowly, because mutation rates are low. Assume that the gene allele A1 mutates to allele A2 at a rate m per generation and that at a given time the frequency of A1 is p.
Explanation:
True or false: nutrients are used to break down oxygen and water to release glucose and carbon dioxide
Answer: it is False
Explanation: because nutrients are not used to break down oxygen and water
But these can be broken down in processes such as PHOTOSYNTHESIS ND CELLULAR RESPIRATION.
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17. How does the placement of the stamen in relationship to the pistil affect the way in which
the flower is fertilized?
Answer:
this placement increases the chances of pollination
Explanation:
Pollination refers to the process of transferring pollen grains from the male stamens of a flower to the female stigma. The stamens generally surround the pistil and they are composed of two structures: 1-the anther (produces male reproductive cells or pollen grains) and 2-filaments (supports the anthers). Moreover, the female pistil is generally located at the center of the flower and it is composed of three structures: stigma (a sticky bulb in the center of flower), ovary (contains female reproductive cells or ovules), style (supports the stigma). The arrangement of the plant's reproductive organs increases the chances of pollination: when a pollinator (e.g. bees) visits a stigma for nectar it has to go through the stamen and catch pollen that then carries to the stigma of the same flower (auto-pollination) or another flower (cross-pollination). Moreover, the flowers also have petals and sepals that help attract pollinators and protect the flower bud, respectively.
Which conclusion BEST describes the data in this table in reference to all life on Earth?
O Organisms have different proportions of bases in their DNA.
O Plants are least related genetically to other organisms on this table.
0 Animals have similar amounts of bases in their cells.
O The genetic code is exactly the same among all living organisms.
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Which of the following is true regarding Darwin's theory of evolution?
A. Acquired traits are always passed on to the offspring
B. Organisms develop favorable adaptations based on a need
C. Pure chance determines which species evolve
D. Individuals pass on adaptations to their offspring, due to natural selection
Answer:D
Explanation:
Evolution
Individuals pass on adaptations to their offspring, due to natural selection. The correct option is D.
What is Darwin's theory of evolution?The English naturalist Charles Darwin and others developed the Darwinism theory of biological evolution, which contends that all species of organisms arise and develop through the natural selection of minute, inherited variations that improve the individual's capacity for competition, survival, and reproduction.
Darwin claimed that all species share a common origin, that species can change through time, and that new species develop from existing ones.
Charles Darwin, a naturalist of the 19th century, investigated the theory of natural selection.
Natural selection provides an explanation for how a species' genetic features might evolve through time. This could result in speciation, or the creation of a new, separate species.
Thus, the correct option is D.
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Prairies
Forests
Beaches
Dunes
Lakes
Ponds
Rivers
Streams
Wetlands
Coral Reefs
Estuaries
Salt Marshes
Mangrove Swamps
Florida Ecosystems
Once given your Florida ecosystem, you will research and present the topics listed below about your ecosystem. Please include visuals.
Briefly tell us where in Florida your ecosystem is often found and general characteristics
---average amount of water
---general physical characteristics
---unique characteristics of your ecosystem
List and describe 3 common producers found in your ecosystem
---include information such as what type of species prey on these producers, what the producer needs in order to survive and thrive, etc.)
List and describe 6 common consumers found in your ecosystem
---In your descriptions please include what the animals are preying on, where they build shelters, what their niche is, etc.)
Try to find at least one decomposer and/or scavenger in your ecosystem
--- What is it eating/decomposing? How is this helpful to the ecosystem?
List and describe one example of mutualism, one example of commensalism and one example of parasitism in your ecosystem
---Name the species involved and explain the relationships
List any endangered, threatened or extinct species from that ecosystem
Explain 1 food chain in your ecosystem
Explain competition between species in your ecosystem
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Answer:
Called creepy, scary and spooky, bats often get a bad rap. They’re an important species that impact our daily lives in ways we might not even realize. From pollinating our favorite fruits to eating pesky insects to inspiring medical marvels, bats are heroes of the night.
Explanation:
Help please someone please what is the answer
Answer:
The answer is true.
Explanation:
Cuz that water be nasty.
Brainliest would be really really awesome!!!
5 examples are of renewable resources if conserved properly
Answer:
Renewable resources include biomass energy (such as ethanol), hydropower, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals. This includes wood, sewage, and ethanol (which comes from corn or other plants)
Explanation:
In a food chain, the organism that eats the secondary consumer is the:
A.Carnivore
B.Second Consumer
C.Primary Consumer D.Producer
Answer:
A
Explanation:
Can someone PLEASE help I will mark brainlist!
Answer:
C. Mutations are all permanent. Mutations can occur in many types of cells, and contribute to genetic diversity. Not all mutations are caused by harmful chemicals, as there are many natural mutations in nature. However, mutations are not always passed on from parents to offspring.
mitosis is the stage of the cell cycle during which
Answer:
mitotic phase
The amount of water vapor present in the air is
A water vapor
B humidity
C anemometer
D air pressure
Answer:
humidity
Explanation:
The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.
Describe the limiting factors that can affect carrying capacity.
Answer: Limiting factors determine carrying capacity. The availability of abiotic factors (such as water, oxygen, and space) and biotic factors (such as food) dictates how many organisms can live in an ecosystem. Carrying capacity is also impacted by the availability of decomposers. Space, food, oxygen, and water are limiting factors. ... Limiting factors determine carrying capacity. The availability of abiotic factors (such as water, oxygen, and space) and biotic factors (such as food) dictates how many organisms can live in an ecosystem.
Explanation:
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Answer:
An Ocean Shore
Explanation:
The wind would erode and deposit sand from dunes, and the water from the waves will erode rocks.
Answer:
the open ocean
Explanation:
Please someone help me and don’t send me a link
1 7.1.2 Exam: Semester Exam Question 36 of 42 What tends to happen to a sound wave as air temperature increases? O A. The wave's speed decreases. B. The wave stands still. . O C. The wave vibrates more slowly . D. The wave's speed increases
Answer:
D
Explanation:
The wave's speed increases when air temperature increases. Therefore, option (D) is correct.
What are sound waves?As air temperature increases, the speed of sound waves in air also increases. This is because air molecules move more quickly at higher temperatures, and the faster-moving molecules can transmit the sound energy more quickly. As a result, sound waves will travel faster through hot air than through cold air.
Conversely, as air temperature decreases, the speed of sound waves in air will decrease as well. This property of sound waves can have practical implications, such as in designing concert halls or sound systems where the temperature of the air needs to be taken into account in order to achieve optimal sound quality.
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The diagram below represents some changes that took place in a bacterial population recently exposed to an antibiotic.Which statement would best explain the presence of bacteria on day 4?A) A bacterial population cannot survive exposure to antibiotics.B) This bacterial population cannot survive exposure to this antibiotic.C) Bacteria can change whenever it is necessary to survive antibiotic treatment.D) Some of the bacterial population was resistant to this antibiotic.
About the question:
You will find the diagram used to answer the question in the attached files.
Answer:
D) Some of the bacterial population was resistant to this antibiotic.
Explanation:
The term resistance refers to an inheritable change in a population sensitivity, reflected through the consecutive failure of the chemical effects, correctly used to reach a desired effect on the target population.
The excessive use of antibiotics on the bacteria population leads to the fixation of new mutated genes -by natural selection-. The mutated genes make these cells even more resistant to the drug.
In the exposed example we have,
Day 1 ⇒ a big population of white bacteria and only one black cell, probably carrying mutated genetic material.The population was treated with antibiotics.
Day 2 ⇒ there are fewer white bacteria and three black cells. This means that white bacteria are dying, while the black ones are reproducing.The mutated phenotype gets to survive under the effects of the chemical.
Day 3 ⇒ There are no more white bacteria. Only the black population survived and keeps reproducing.The mutated bacteria reproduce with the capability of tolerating the antibiotic dose that is usually used to destroy a population of white bacteria.
Day 4 ⇒ Black bacteria got to survive a produce a big population. Remember that bacteria follow the exponential growth model, meaning that their reproductive rate is too high. This black population survived the antibiotic action and reproduced at high rates.A tornado strips out a section of a forest. What type of succession is this? Why?
Answer:
Secondary succession
Explanation:
A secondary succession is when a type of disturbance happens when there is already soil present. In this case, it has already started out with a forest (including plants, trees, and wildlife). Other examples of a secondary succession include a wildfire, hurricane, flood, or human destruction.
This is different from a primary succession. A primary succession occurs when there is no soil present.
The first element of the periodic table is:
(A) Oxygen
(B) Hydrogen
(C) Helium
(D) Carbon
Answer:
The anwser Is B:Hydrogen
Answer:
B) Hydrogen
Explanation:
hydrogen's atomic number is 1
Question 32
2 pts
Which of the following is true about horns and antlers?
Antlers are permanent and are made of hair.
O None of the other answers are correct.
O Horns are shed yearly and are made of hair.
O Antlers are shed yearly and are made of bone.
Horns are shed yearly and are made of bone.
Answer: C
Explanation:
Kinda common knowledge. Reindeer have antlers and they shed yearly
10 points each answer and brainliest
(picture shown)
The diagram below shows four positions of Earth around the sun.
In which of these positions will the Earth move the fastest?
Position A
Position B
Position C
Position D
Answer:
b-a
Explanation:
.because the sun is pulling the earth but i..d...k what position u would answer with that hope that helps :p
10 points for each answer brainliest as well
Based on the Nebular theory, which of these is a step in the formation of the center of a new planetary system?
A. evaporation of condensed gases due to heat
B. combination of condensed gases due to gravity
C. contraction of condensed gases due to nuclear fission
D. expansion of condensed gases due to nuclear fission
Answer:
D
Explanation:
The nebular theory states that Solar and Stellar System were developed from a primeval nebula. The one that is a step in the formation of the center of a new planetary system is
D. expansion of condensed gases due to nuclear fission
good luck
4. Which of the following is the most likely result of a non-native generalist species being introduced into an ecosystem?
a. Without natural predators, the species may outcompete native species.
b. The species will have no food sources and will not survive.
c. Extinction of the species will be likely throughout its range.
d. The species will cause changes in ballast water.
Question 18 of 50
2 Points
How big would a near-Earth object have to be in order to cause damage if it hit the
Earth?
A. 45 meters
B. 1-2 kilometers
C. 12 miles
D. 1000 feet
The diploid cells of a polar bear contain 74 chromosomes.
How many chromosomes are there
The genetic material that is passed from a parent to a child is called a chromosome. With a diploidy of 74 chromosomes, the haploid cell of the polar bear will have 37.
What is the difference between haploid and diploid cells?The number or ploidy of chromosomes in the somatic or germinal cells determines whether a cell is diploid or haploid. A twofold set of chromosomes is referred to as diploidy and is symbolized by the number 2n.
Haploidy, which is denoted by the number n, refers to the single or partial set of chromosomes found in germinal or reproductive cells. They describe the gametes that participate in fertilization.
If a polar bear's diploid cells (2n) have 74 chromosomes, its haploid cells (n) will have the following chromosome makeup:
2n = 74
n = 37
Therefore, option C is correct.
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Please provide me with the answer and an explanation to this question.
what did I do wrong?
what is the difference between elevation and altitude?
Mention ten example of plants
Answer:
Herbs.
Shrubs.
Trees.
Climbers.
Creepers.
trees, grass, moss, flowers, and weeds,
Explanation: ya
Answer:
Trees
Flowers
Moss
Grasses
Algae
Fern
Reeds
Bamboo
Herbs and
Shrubs
Explanation:
Hope this helps
Sediments are NOT _______________. Group of answer choices A. Salt in a river B. Nutrients in a river C. Earth material in a river D. Oil mix in river water
2. Which pair consists of terms that represent equivalent units of information? *
(10 Points)
Codon : DNA
Gene: polypeptide
Chromosome : protein
Nucleotide : amino acid
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Answer:
abiotic
Explanation:
abiotic - nonliving components of an ecosystem that can affect the living organisms.
Temperature is a nonliving component and it affects the organisms that live within a certain environment.
Therefore the answer is Abiotic
Reasons its not the other answers:
Biotic factors must be living things
Temperature is not a living thing therefore Biotic cannot be the answer
Same with living, temperature is not living therefore the answer cannot be living.
Temperature plays a huge role in an ecosystem therefore it is considered an important component and the answer cannot be unimportant.