Some humans can wiggle their ears. This trait is not relevant to the survival of humans. What does
the existence of unused structures, such as
muscles around the ears, suggest about the
ancestry of humans?
O A. Humans evolved from chimpanzees, who
use their ear muscles to find food.
B. Ear muscles may help humans survive as
conditions on Earth change.
O C. Humans evolved from an earlier species
that had ear muscles, which were
important to the survival of the earlier
species.
D. Humans in the 18th century moved their
ears as a way to communicate.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

  like australopithecus afarensis; probably the direct ancestor of this group. africa: 5.8 to 4.4 million years ago. 

The answer is 25.1  wont let me give a short have a nice day?