Which statement describes a population in which there is a competition for energy?

no
Male peacocks fight one another for a female.
Squirrels are searching for a new place to make a nest.
Elephants are in search of water during a dry season.
Several lions fight over a recent animal kill.

Several lions fight over a recent animal kill.

Explanation:

Organisms in an ecosystem tend to interact with one another. One of those interactions is termed COMPETITION, which is an interaction between two organisms whereby one or both of the organisms is harmed. Competition is triggered by the limited supply of one or more resource in an ecosystem. Competition can be between same species called INTRASPECIFIC or between different organisms called INTERSPECIFIC.

According to the question, several lions fighting over a recent animal kill depicts organisms in a population involved in a competition for energy (food source). Energy is obtained via food consumption, hence, the limited resource in the example must be food. The example is an example of INTRASPECIFIC competition because it involves organisms of same species (lions).

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a