BIOLOGY HIGH SCHOOL

An aquatic food web consists of phytoplankton → krill → seals → sharks. The removal of which component is MOST LIKELY to cause an immediate impact on the food web?

Answers

Answer 1
Answer:

Answer: The correct answer is-

phytoplankton .

In the given food chain of aquatic ecosystem, Phytoplanktons occupy the first trophic level ( as they form the base of the food chain) and they are called producers ( synthesize their own food using carbon dioxide and water in the presence of sunlight).

The energy is then transferred to the subsequent trophic levels from phytoplanktons to consumers ( krill, seals, and sharks).

If phytoplanktons are removed from the food chain, there will be no food available for krill and they will start to decline, which will eventually cause the decline in the subsequent trophic levels ( that is seals and shark).

Thus, phytoplanktons is the right answer.
Answer 2
Answer: Removing the Phytoplankton would cause an impact in the food web as its a keystone species without it the krill wouldn't survive meaning that anything that eats the krill or anything thing that eats what eats the krill would all die out 

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the plasma membrane allows some molecular species to enter and excludes others. it is therefore referred to as a ___ membrane?
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Which is the source of energy for earths living things?

Answers

the sun is the source of energy for earths living things

A factor that is necessary for the formation of a new species is

Answers

The factors that are necessary for the formation of new species are genetic mutations, isolation, some environmental factors, etc.

What is referred to as variation?

The difference in DNA among individuals or the differences between populations is referred to as variation.

There are multiple sources of genetic variation including the following:

  • Genetic mutation.
  • Geographical isolation.
  • Reproductive isolation.
  • Environmental factors.
  • Geographical barriers.

Variation can leads to the formation of new species.

Thus, these are some factors that are responsible for the formation of new species.

For more details regarding variation, visit:

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Answer:

reproduction at different times

Explanation:

"tutor-verified" one was wrong doesnt listen to it XD

The allele for a widowÍs peak has complete dominance over the allele for a straight hairline (w). What is the probability of two parents heterozygous for a widowÍs peak (Ww) having an offspring with a widowÍs peak? 75 percent
50 percent
0 percent
25 percent

=

Answers

"75%" is the one probability of two parents heterozygous for a widowÍs peak (Ww) having an offspring with a widowÍs peak among the following choices given in the question. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has come to your help.

suppose that your friend is moving far away and describing his new location. He mentioned that Derreck gets a lot of precipitation for most of the year, except for the summer, which is cool and dry. He also noted that his house is surrounded by flowering trees in conifers and that he saw at least 3 camouflaged animals more quickly than his sister could. Which biome well his new home be part of?

Answers

To me this Biome sounds like a Tropical Forest i may be wrong.

Where does the energy & phosphates come from to create ATP?

Answers

Answer:

Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.

Explanation:

Answer:

When the cell has extra energy it stores that enrgy

by reattcaching a free phosphate molecule to ADP, turning it back into ATP. The ATP molecule is just lile  a rechargable battery.

Female salmon drop their eggs at the bottom of the river, and then the male salmon come by and release sperm over them. This is called _____. external fertilization internal fertilization conjugation pollination

Answers

Answer: external fertilization

Explanation:

External fertilization is the process of fertilization in which the male sperm cells fuses with the female egg cells outside the body of the female. This type of fertilization is used by the organisms which live in the water body.

The salmon is a fish species which utilizes external fertilization. In the case of salmon, the female salmon drops the eggs in the bottom of the water which are fertilized by male salmon after secreting their sperms over these eggs.

external fertilization......................
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