The different neck lengths of the tortoises shown below is an example of: A) artificial selection

B) adaptions as compromises

C) vestigial structures

D) variation between species

its 42

i say its d?

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.