PLS HELP ASAP 60 points! in complete sentences compare in depth each of the following:

Compare their functions
Compare their structures
Compare how they look when they are stained
Compare their counts

Environmental differences within ecosystems are generally caused by

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?