1 It is hard to imagine how big a billion is. A billion is 1 000 000 000 (or one thousand
million). There are 1 000 millimetres in 1 metre and 1 000 metres in 1 kilometre.
How many millimetres are in 1 kilometre?

Which feature of a human community is similar to a niche in a biological community

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

Across of blue x blue (both heterozygous) would result in