Which principle states that two species in the same habitat cannot have the same niche? niche exclusion principle
competitive exclusion principle
habitat exclusion principle
population exclusion principle

competitive

Explanation:

example 1: two male bucks cannot inhabit the same habitat or area because one needs all the females or pride for itself so it chases away the others

the answer to your question is competitive

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.