Answer:
Explanation:
Doppler radar works by sending <u>a beam of electromagnetic radiation waves, </u>tuned to a precise frequency, at a moving object. You can use Doppler radar on a stationary object, of course, but it's fairly uninteresting unless the target is moving
Tigers don't produce anything useful, but they are the top of their food chain. They would e top predators, and top predators are always consumers.