The answer is a singlemodel . because it hows a single sequence of feeding relationship. i bet u i am wrong if i am u have to do what my username is to me
Answer: B
Explanation: The circulatory system is responsible for bringing food and oxygen to every cell in your body. The respiratory system is responsible for carrying oxygen and carbon dioxide in and out of your body. The excretory system is responsible for removing waste from your body.
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Answer:
In the given question, the crucial rivets represent keystone species.
Explanation:
An ecosystem comprises some of the species, which are essential to the survival of the other species in the system, these species are known as the keystone species. The keystone species can be an unassuming plant or a huge predator, and in the absence of a keystone species, the ecosystem may not thrive.
In an ecosystem, the keystone is regarded as one of the most essential parts. A keystone species refers to an organism, which helps in sustaining the system together. Some of the ecosystems may lose their tendency to amend with the changes in the environment if their keystone species get vanished.
There are three kinds of keystone species considered by various scientists. These are ecosystem engineers, predators, and mutualists.
C.<span>trees going dormant in winter to survive unfavorable conditions</span>
<span>The correct answer is that cholesterol is
steroidal alcohol.</span>
Cholesterol is an important organic molecule biosynthesized by all animal cells because it is an essential structural component of cell membranes. Its function in the membrane is to maintain membrane structural integrity and fluidity and to change cell’s shape rapidly. Cholesterol is a precursor for the biosynthesis of steroid hormones and vitamin D and bile acid.