Aresearcher sprays a new pesticide on thousands of insects of the same species that live in a large field. a few of the insects survive. what can be concluded by the researcher?

the answer to your question is:

c. complementary base-pairing

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.