Which of the following is a common health consequence of limited physical activities and no exercise? Increased risk of Type 2 diabetes and heart disease
Slower reaction times and blurred vision or speech
Increased risk of cancer due to UV light sensitivity
Stronger immune system and decreased illness

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"