Which features are unique to insects as compared to birds?

A.) bilateral symmetry and sexual reproduction

B.) antennae and exoskeleton

C.) sexual reproduction and nervous system

D.) exoskeleton and bilateral symmetry

B, exoskeleton and antennae

Explanation:

I took vet prep, we learned about this. The bilateral symmetry is when you take two half's of an organism and each side looks the same. Both are like that with a bird and an insect is the answer is B.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

condenser is used to focus in the light microscope.