PLZ HELP DUE RIGHT NOW!! WILL MARK BRAINLEST IF CORRECT Which three workers use technologies that apply the Doppler effect?

A. An ultrasound technician

B. An insurance building inspector

C. A race-car mechanic

D. A pilot who needs to avoid bad weather

ultrasound tech, insurance building inspecto, pilot who needs to avoid bad weather

Explanation:

A,B,D

Producers are plants, they really are the base of all food webs. This is because with out them everything would just fall apart. When you think of a food web you might think about Bunny>Snake>Hawk but the base of that food web is the plants that the Bunny eats. Without the plants everything else in the food web would starve.