Which geographic feature is responsible for bring humans and dogs to north america?
a. bering sea land bridge
b. indian ocean
c. alaskan islands
d. polar ice cap

What are charcteristics of lithosphere?

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins