(Im in 4th but.. I need to ask this question.) The exchange of oxygen and carbon dioxide between plants and animals is called? A. Photosynthesis?

B. Carbon dioxide-oxygen cycle?

C. Life cycle?

D. Pollination?

B

Explanation:

A is making oxygen

C is life and death

D is making plants grow

b because i did this like last week and i still Remember

Explanation:

image result for what happens whenever a net force acts on an object

if an object has a net force acting on it, it will accelerate. the object will speed up, slow down or change direction. an unbalanced force (net force) acting on an object changes its speed and/or direction of motion. an unbalanced force is an unopposed force that causes a change in motion.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.