They built temples tombs pyramids and much more
HNO3 Has a 3 next to the O. this means that there are 3 oxygen atoms.
Answer: True
Explanation: the theory of the island biogeography equilibrium modem describes that species have to get to a certain island from somewhere else which is the immigration part and other species have to migrate from the island as they run out of resources which is the extinction part. This theory shows that as the number of immigration increases and a new place is colonized the rate of extinction of species increases because there is more competition and limited resources for these species and vice versa.
Gravel in the soil helps crops grow better, since they provide nutrients. Sand however, doesn't impact the crops growth at all.
