300 million years.
yes they do in facts share a common ancestor.
Yes, humans and bats share a common ancestor. Both humans and bats belong to the group of mammals, which evolved from a common ancestor millions of years ago.
They share a common ancestor.
Crocodiles and birds share a common ancestor. This can be seen by comparing the internal anatomy of the two. Dogs and Dolphins also have a common ancestor. Their skeletons again are both distinctly mammillian. The ancestor of dogs and dolphins and the ancestor of birds and crocodiles will again share a common ancestor, but you will need to go much further back. I am not sure of the timescales but we are talking tens to hundreds of million years.
Yes. If you go back far enough, all life on Earth shares a common ancestor.
Humans did not evolve from chimpanzees. According the the theory of evolution, all types of organisms share a common ancestor. Those "basic" species evolved into other species. So humans and chimpanzees are descended from a common primate ancestor Humans decended from a common ancestor, one of which evolved to the chimps and the other to humans. So we are therefore the 5th ape. All living things share a universal common ancestor as we are the products of evolution by natural selection. And there are skeletal remains to prove it.
that they share a common ancestor
Yes, if you go back far enough.
Of course. Every living thing has a common ancestor. Humans and flies are both in the animalia kingdom.
Yes, plants and animals share a common ancestor.
Alligators and birds are related and share an ancestor with these traits.
Humans' closest relatives in the animal kingdom are chimpanzees and bonobos, with whom we share a common ancestor.