What is true regarding color blindness

What do animals wth echolocation have in common other than echolocation

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity