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igor_vitrenko [27]
3 years ago
9

The following is one of the food chains within the Alaskan coast. The sea otter feeds on the sea urchins and the sea urchins fee

ds on the kelp (sea weed). It has been observed that the population of the sea otter is decreasing while the population of sea urchins is exploding. Consequently, the sea urchins have almost depleted the kelp. Which of the three species can be regarded as a keystone species/predator?
Biology
1 answer:
Gala2k [10]3 years ago
7 0

Answer:

The correct answer is sea otter.

Explanation:

A keystone species is that species that have a major impact on its ecosystem relative to its number. A keystone species stabilize an ecosystem by controlling the population of other species.

For example, sea otter is a keystone species that feeds on sea urchin and control its population. As the sea urchin population is under control seaweed population is also stable because sea urchin feeds on seaweeds.

As the population of sea otter declines the population of sea urchin increases because of having fewer predators and then this overpopulation of urchin depletes all the kelp by feeding on them.  

Therefore the right answer is- sea otter is the keystone species.

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Nucleotides are the building blocks of dna and rna. One nucleotide is also used in the high-energy molecule (pictured below) ___
Marysya12 [62]

Answer

          Nucleotide that use in the formation of high energy molecule is known as Adenine.

Explanation

         A single nucleotide is composed of three components, these are:

1. Pentose sugar

2. Phosphate group (phosphoric acid, and

3. Nitrogenous base.

Formation of high energy molecule

                  ATP stands for adenosine triphosphate is a type of mononucleotide. When adenine and nitrogenous base combine they give rise to another molecule known as adenosine.

                             Adenine + nitrogenous base →   Adenosine

However when one phosphate group is attached to it it become adenosine monophosphate.

                    Adenosine + posphate → Adenosine monophosphate

Similary when another phosphate is attached it become adenosine diphosphate and the addition of third phosphate lead to the formation of adenosine triphosphate.

Conclusion

               Thus is is cleared from the above discussion that Adenine is the main component of ATP (Energy rich molecule).

4 0
3 years ago
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katrin2010 [14]

Answer:

two carbon atom and six hydrogen atoms join together to form ethane.

Explanation:

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4 years ago
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Inherited mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people.

Hope this helped :)
Have a great day
3 0
3 years ago
Which of the following organelles provide structure and rigidity to a plant cell?
Anuta_ua [19.1K]

Answer:

chloroplasts

Explanation:

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