what do echolocation and ultrasounds have in common?\no both use absorption of sound waves.\no both use…

Brief Explanations:

Echolocation and ultrasounds both rely on sound waves bouncing back (reflecting) from objects. Echolocation used by animals like bats emits sound waves and interprets the echoes. Ultrasounds in medical - imaging send sound waves into the body and use the reflected waves to form an image.

Answer:

Both use reflected sound waves.