Select the correct answer from each drop-down menu. Sharks, whales, and dolphins share similar features such as body shape and the position of fins. However, sharks have gills for breathing,
while whales and dolphins have lungs. These differences Indicate that the organisms share a common ancestor for
v
Whales also possess a vestigial pelvic bone. The presence of the pelvis bone may indicate that whales

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

the correct answer is d

the correct answer to this question is #5

sex cells are usually half's then they find another half and make a fertilize egg