What are fish-eating marine mammals that have sleek, short bodies and wide flippers for swimming?
a. pelicans
b. penguins
c. sea turtles
d. seals

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher