A food chain shows how
matter moves through an
ecosystem. Which of these
substances forms the base of
the matter in food chains and
food webs?
A. light
B. carbohydrates
C. iron and lead

Answers

Answer 1

Answer: B

Explanation:

Answer 2

Answer:

carbohydrates

Explanation:


Related Questions

You are working with a population of snails. During the mating season, you observe that individuals in the population will only mate with others of the same genotype. For example, Mm individuals will only mate with Mm individuals, and mm individuals will only mate with other mm individuals. There are only two alleles for this gene (M is dominant; m is recessive). You have determined that the frequency of the M allele is 0.5. After one generation, what is the expected genotype frequency for Mm individuals in this population

Answers

If matings are not random in a population and individuals mate with other individuals of similar genotype/phenotype, h0m0zyg0us frequencies increase. In this example, the genotype frequency for Mm is F(Mm) = 0.25.

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In the exposed example, one of the assumptions of Hardy-Weinberg equilibrium is not accomplished. There are non random matings.

Individuals mate with other snails of the same genotypes

MM  x  MM

Mm  x  Mm

mm  x  mm

We can assume this is an example of matings by similar phenotypes.

Eventually, this mating system leads to an increase in the h0m0zyg0us genotype frequency, at the expense of heter0zyg0us ones in loci that determine the trait.

Allelic frequencies do not change. Only genotypic frequencies do.

This mating system tends to separate the population into two subgroups, decreasing the amount of heter0zyg0us individuals.

          Matings              Progeny                              

MM  x  MM         4/4 MMMM  x  Mm         1/4  MM + 2/4 Mm + 1/4 mmmm  x  mm         4/4 mm

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 MmF(Mm) = 1/2 MmF(mm) = 4/4 mm + 1/4 Mm

So, in the exposed example we know that the frequency of the dominant allele M is 0.5

f(M) = p = 0.5

knowing that p + q = 1, we can clear the equation to get the frequency of the recessive allele.

p + q = 1

0.5 + q = 1

q = 1 - 0.5

q = 0.5

f(m) = q = 0.5

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 Mm

       F(MM) = p² + 1/4 (2pq)

       F (MM) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

       F(MM) = 0.375

F(Mm) = 1/2 Mm

        F(Mm) = 1/2 (2pq)

        F(Mm) = 1/2 (0.5)

        F (Mm) = 0.25

F(mm) = 4/4 mm + 1/4 Mm

        F(mm) = q² + 1/4 (2pq)

        F(mm) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

        F(mm) = 0.375

The expected genotype frequency for Mm individuals in this population is F(Mm) = 0.25.

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The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice made up a large part of the diet of the forest fox.

What is the best prediction about what will happen to the foxes?

Answers

As their main source of food has died out through the course of time the forest fox will have a harder time finding different prey causing them to die

can someone please help me on this all u have to do is search up on the internet and then put down 4 facts that are mentioned in the web site and give the main idea to but make sure I know were the main idea is

web site: should we bring back extinct species ​

Answers

literally do it urself LOL

Many livestock are being grazed on public lands because the fees to graze on public lands are cheaper than the fees for private lands. If we aren't careful, what can this cause? A. owners moving their livestock TO private lands B. increased fees for private lands C. overgrazing on public lands D. overgrazing on private lands​

Answers

Answer:

I would say that this would cause "overgrazing on public lands."

Explanation:

When people see that the fees are cheaper, they would send their livestock there. It might be alot of livestock though

Describe the ovary of the flower​

Answers

Explanation:

Enlarged basal portion of the pistil, the female organ of a flower. The ovary contains ovules, which develop into seeds upon fertilization.

Which two soil conservation techniques would be best to use on gentle slopes?​

Answers

Answer:

planting trees

contuor farming/building of porous dams

10. A Rock is a
type of rock that
forms from an
existing rock that is
changed by heat.

Answers

Answer:

yes

Explanation:

that is indeed the definition of a ROCK.

Yes that’s the definition and also the process of erosion

Answer to this please.

Answers

I believe it is the first option

Which freshwater biome has the highest organism diversity of all the freshwater biomes?
wetlands
streams and rivers
ponds and lakes
estuaries

Answers

Answer: wetlands
Explanation: Wetlands are considered the most biologically diverse of all ecosystems.

15. Stephanie made the following chart for the terrestrial planets. What correction needs to be made?
Mercury
Venus
Earth
Mars
no atmosphere
very thick atmosphere
medium atmosphere
no atmosphere
1st planet
2nd planet
3rd planet
4th planet
1 year is shorter than Earth's year.
1 year is short than Earth's year.
1 year is approximately 365 days.
1 year is longer than Earth's year.
O Mars's year is shorter than Earth's year.
O Mercury's year is longer than Earth's year.
A
O Mars has a thin atmosphere
O Earth is the 2nd planet and Venus is the 3rd.

Answers

Answer:

c. mars has a thin atmosphere

Explanation:

i hope that helps even though its a few days late

The proccess of photosynthesis can be represented by the chemical formula _________

Answers

Answer:

6H2O + 6CO2 ----- C6H1206 + 6O2

Does the light independent pathway of photosynthesis continue to occur when the leaf disks are placed in the dark environment

Answers

Does the light independent pathway of photosynthesis continue to occur when the leaf disks are placed in the dark environment?

Answer: Does the light independent pathway of photosynthesis continue to occur when the leaf disks are placed in the dark environment.


In plants, carbon dioxide (CO2) enters the leaves through stomata, where it diffuses over short distances through intercellular spaces until it reaches the mesophyll cells. Once in the mesophyll cells, CO2 diffuses into the stroma of the chloroplast, the site of light-independent reactions of photosynthesis.

Yes, the light independent pathway of photosynthesis continues to occur when the leaf disks are placed in the dark environment.

What is photosynthesis?“The process by which green plants make their own food in presence of sunlight, chlorophyll and carbon dioxide is called photosynthesis.”In this process oxygen molecule is released as by product.

It has two pathways: light dependent and light independent.

In light dependent pathway, light energy is used by chlorophyll and is converted into chemical energy.In light independent pathway, the energy produced during light dependent pathway is used to convert carbon dioxide into carbohydrates. It occurs in the stroma of the chloroplast.

Hence, it is true that the light independent pathway of photosynthesis continues to occur when the leaf disks are placed in the dark environment.

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Discuss the arguments for and against genetic therapy and genetic engineering.

Answers

Answer:

Reasons to ban germline gene editing include the profound risks to future children, thin medical justifications, reinforcing existing inequalities and creating new forms of discrimination, eroding public trust in responsible science, and undermining global agreements.

Explanation:

ppbag at it again

This image shows the many
arteries and veins making up
the circulatory system. Which
of these delivers OXYGEN-
POOR blood from the body
back to the heart?
A. arteries
B. veins
C. neither of these

Answers

Answer:

B

Explanation:

If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?

Answers

Answer:

From what I remember in my 9th grade biology class, it's usually half that amount.

Mia and Raphael are discussing the ketogenic diet, also known as Keto, as a way of losing weight. Using the Keto method depends on changing the proportions of nutrient macromolecules that are eaten
daily to adjust energy metabolism. Which group of macromolecules can be affected by Keto eating choices, and is used for long term storage plus happens to be insoluble in water?
O carbohydrates
Ads
O nucleic acids
O proteins

Answers

The group of macromolecules that can be affected by Keto's eating choices, and is used for long-term storage, in addition to being insoluble in water, is lipid.

The ketogenic diet consists of significantly reducing the amount of carbohydrates ingested daily and adding more fat to the diet.

After about three weeks of reducing carbohydrates from the diet, the body enters a metabolic state called ketosis, turning stored fat as the body's energy source.

Therefore, the ketogenic diet can bring benefits to the individual, such as accelerated weight loss and prolonged satiety, but it can also be a difficult diet to follow for long periods, as it is more restrictive.

The ideal, then, is always to seek specialized help when you want to achieve some aesthetic or health goal related to weight loss, so that the professional can develop a diet focused on the needs and individualities of each one.

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Which of the following are characteristics of the tundra biome? (Choose all that apply.)
much rainfall throughout the year
low biodiversity
very cold temperatures
lack of trees

Answers

Answer is very cold temperatures, lack of trees and low biodiversity

The Tundra is defined mainly by permafrost, lack of trees, low biodiversity, and harsh conditions. It occupies the area between the polar ice caps and the boreal forests (or taiga).

The tundra biome is characterized by extremely cold temperatures and treeless, frozen landscapes. There are two types of tundra, the arctic tundra and the alpine tundra.

The World’s Ice Deserts: The Tundra Biome

The tundra is the coldest of all the biomes with an annual average temperature of less than 5°C, and precipitation (mostly in the form of snow) less than 100 mm per year. The weather conditions at tundra are so harsh that only a handful of plants and animals can even survive there. The word tundra comes from the Finnish word ‘tunturia’ which means treeless plain.

The tundra is one of the least understood and most fascinating biomes on the planet. This incredibly difficult climate and the environment have both a bizarre and diverse range of animals that have learned to survive with the limited amounts of green plant life, sunlight and moisture. Due to extremely cold temperatures, the layer just below the surface remains permanently frozen. This frozen layer of ground is called ‘permafrost.’

A lack of trees, a lack of biodiversity, and extreme circumstances are what most clearly identify the tundra.

What is Tundra Biome?

The polar ice caps and the boreal woodlands (also known as taiga), it is located. Extremely low temperatures and barren, icy terrain define the tundra biome. The arctic tundra and the alpine tundra are the two different forms of tundra.

The Tundra Biome: The Ice Deserts of the World. The tundra is the coldest biome, with an average annual temperature of less than 5°C and yearly precipitation of less than 100 mm, most of it snow.

Only a few number of plants and animals can even thrive on the tundra due to its extreme weather conditions. The Finnish term "tunturia" is where the word "tundra" originates.

Therefore, a lack of trees, a lack of biodiversity, and extreme circumstances are what most clearly identify the tundra.

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Which instruments has indefinite pitch

Answers

Instruments of indefinite pitch exist by the hundreds. Some of the more common ones are the snare drum, tenor drum, tom-tom, bass drum, bongos,

Is cloning of endangered species a reliable and acceptable way to repopulate those ecosystems that suffer the loss of important species? Why or why not. (2 paragraph
minimum).

Answers

Cloning an extinct species is a possible answer for a suffering ecosystem. The only drawback is that scientists have not yet mastered cloning. When attempting to clone animals often they are deformed and therefore not able to reproduce let alone survive. Even when scientists do manage to clone animals without killing them, it takes many generations of selective breeding to get the species you are trying to revive which takes time, making the ecosystem even more damaged.

The study of a living being is called biology.

The correct answer is not reliable.

The duplication of the genes in the laboratory is called cloning.

The first clone species was the sheep whose name was a dolly.

Those species which are on the verge of extinction is called endangered species and they need extra protection to carry their gene to the next generation.

The cloning will be able to multiply the gene in the in-vitro culture but they will have a direct impact on the natural genes and the combination of the gene present in nature.

The natural species have all the desired genes which help them to survive in nature, whereas the clone species will not have the desired gene which is required to adapt to nature and they will extinct eventually. If these genes pass on to the next generation then the endangered species will also have less chance to survive in nature.

Hence, in my opinion, they cloning is not a suitable way to save endangered species.

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Anaerobic respiration occurs when

a. There is too much oxygen to do aerobic respiration
b. Photosynthesis cannot take place
c. There is not enough oxygen to do aerobic respiration
d. It is usually occurring in your body

Answers

I think the answer is A.

Which part would best model a cells nucleus

Answers

Answer:

which part of what

Explanation:

vermiform appendix is a vestigial organ in human being give reason.​

Answers

Answer:

The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm. Vestigial in that sense means that the vermiform appendix seemingly has no functions or is useless now but they might have had functions previously which are lost someway due to evolution.

Explanation:

Vestigial organs are organs, tissues or cells in a body which are not functional anymore the way they were in their ancestral form of the trait. It is therefore authentication of evolution and hence were helpful in explaining adaptation.

What is the relationship between the number of blood cells in the body and illness?

Answers

Answer:

Variations from the normal number, size, or maturity of the blood cells can be used to mean there is an infection or disease process. Often with an infection, the number of white blood cells will be elevated.

What is carbon?
A. an element
B. a compound
C. an
organism

Answers

It as an element with an atomic number of 6 in the periodic table
Carbon is an element.

Need answers for this
Thanks

Answers

Answer:

IT is going to be the color purple since there is no sunlight hitting tube A which means no carbon dioxide

Explanation:

Which best describes a temperate deciduous forest?

(A) Seasons are well defined,

(B) Short growing season,

(C) Low rainfall,

(D) all of the above.

Answers

Answer:

I think its D all of the above

b) Give an example of an animal with radial symmetry and an example of an animal with bilateral
symmetry. (2 points)

Answers

Answer:jellyfishes, corals, anemones, and ctenophora.

Explanation:

Examples of animals that possess bilateral symmetry are: flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.

65 points, anwser asap, graph below

What is happening to the deer population between the years 2005 to 2010? Support with reasoning from our model of population growth.

Answers

Answer:wolves

Explanation:

wolves decreased the population because they kept increasing so people killed the and a couple of years later they went up the so they brought wolves back!

The molecules in this diagram are moving in a

A) random motion from one part of a membrane to another, from a higher concentration to a lower concentration.

B) random motion from one part of a membrane to another, from a lower concentration to a higher concentration.

C) straight line motion from one part of a membrane to another, from a higher concentration to a lower concentration.

D) straight line motion from one part of a membrane to another, from a lower concentration to a higher concentration.

Answer:
A) random motion from one part of a membrane to another, from a higher concentration to a lower concentration.

Answers

Answer:

B

Explanation:

random motion from one part of a membrane to another, from a lower concentration to a higher concentration.

Lipids are what?

proteins

acids

fats

amino groups

Answers

The word “lipid” is another word for “fat”. So the answer is fat.
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