Sea glass is broken glass that is worn smooth in the ocean and washed up on beaches. determine whether the underlined group of words is a phrase or a clause, then determine if it is essential or nonessential. a. phrase, nonessential b. clause, nonessential c. phrase, essential d. clause, essential

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Why is it incorrect to say that mitochondria function only as energy factories with cell