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nasty-shy [4]
3 years ago
6

Sea otters are important predators of sea urchins, an animal that eats giant brown kelp in continental shelf zones where they fo

rm huge kelp beds. It was observed that the removal of sea otters from the west coast led to an increase in the sea urchin population. These sea urchins fed on the large kelp fronds, destroying the kelp beds that serve as an important source of food and protection for spawning fish. What role does the sea otter play in this case?
A.) Dominant Species
B.) Invasive species
C.) keystone species
Biology
2 answers:
algol133 years ago
8 0
The answer would be C.) Keystone species due to the vital role the sea otter has in order to regulate the ecosystem.
Alika [10]3 years ago
4 0

Answer:

Keystone species.

Explanation:

Keystone species may be defined as the species on which the other species depend directly or indirectly. The removal of keystone specie from the ecosystem can destroy the structure and functioning of the ecosystem.

Sea otters are predators of the sea urchin and regulate its population and forms kelp beds. Removal of sea otters from the ecosystem destroys the population of spawning fish and increase population of sea urchin destroys the kelp beds. Hence, sea otters acts as a keystone species because other species depends on the sea otter.

Thus, the correct answer is (C).

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noname [10]

Answer:

adhesion

Explanation:

The term used to describe the attraction of water molecules to other molecules is referred to as <u>adhesion</u>.

Generally, adhesion or adhesive forces is a term used to describe the force of attraction between molecules of different substances. This is as opposed to cohesion or cohesive forces which refers to the force of attraction between the molecules of the same substance.

Hence, when molecules of water attract or stick to other molecules, the force at play is an adhesive force or simply adhesion.

8 0
2 years ago
Compare strain and stress
Fantom [35]

While stress is a type of pressure given by force acting per unit area. Strain is the ratio of change in length and total length when stress occurs. Ratio of stress and strain gives Young's Modulus. The curve between stress and stress is linear as long as they are proportional to each other.

6 0
3 years ago
Read 2 more answers
What is the relationship between concentration gradients and the two kinds of transport?
Dmitriy789 [7]

Answer:

A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.

well hope this help at least (good night)

6 0
2 years ago
Which of the following is the smaller amount?
viva [34]

Answer:

A) the concentration of calcium ions in the sarcoplasm of a resting muscle

Explanation:

Sarcoplasmic reticulum is a system of the membranous sac that is present around each myofibril and is filled with calcium ions. When muscles are in the resting stage, calcium ions are stored in the sarcoplasmic reticulum.

As the muscle action potential triggers change in voltage-gated calcium ion channels of the sarcoplasmic reticulum, the channels are opened to release the calcium ions in the sarcoplasm. Increased calcium ion levels in sarcoplasm make the muscle fibers to contract.

Removal of acetylcholine from the synaptic cleft ends the production of muscle action potential and calcium ions are moved back from the sarcoplasmic reticulum.

Hence, lower levels of calcium ions are maintained in sarcoplasm when the muscles are in the resting stage.  

8 0
2 years ago
Atoms differ in their affinity for neutrons, a property called electronegativity. true/false
alina1380 [7]
Atoms do differ in their affinity for neutrons, a property called electronegativity. Therefore, true is the correct answer.
7 0
3 years ago
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