URGENT: (Blank) is an well-tested explanation that tries to answer a “why” question of the natural world. Fill in the blank!

what following? you said which of the following. but there is no be more specific.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

b. climate change will cause an increase in biodiversity of all ecosystems.

hope this

it depends on how much it could carry.