What is a niche?
a. the particular set of resources a species uses
b. a mating system in which one male mates with several females
c. an example of population cycling
d. an evolutionary arms race
e. a plant structure containing many flowers

a. The particular set of resources a species uses

Explanation:

A niche is described as the interaction of an individual with its environment. It is a functional position of an individual. The niche includes how an organism lives, its behavior and abiotic factors such as light, temperature, climate etc.The ecological niche is a multidimensional thought which includes the role of an individual like predation, mutualism, parasitism, competition etc. An example of niche; A bird lives on a tree and eat the fruits.

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rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds