NEED HELP ASAP

A - birth rate of species
B - structure of organisms
C - reproduction system of animals
D- average number of prey animals consumed by a predator

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

What are levels of ecology and how can we remember them