Answer:
The density would stay the same.
Explanation:
The density would stay the same as density is an intensive property meaning it doesn't change based on the amount of matter that you have.
A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.
Answer:
What was the first hominid ancestor?
The first early hominid from Africa, the Taung child, as it was known, was a juvenile member of Australopithecus africanus, a species that lived one million to two million years ago, though at the time skeptical scientists said the chimpanzee-size braincase was too small for a hominid.