All of the following are problems that can stem from building a dam, except
a.
people downriver getting less water
b.
people having to move
c.
electric power being provided
d.
natural habitats being affected

What is the primary justification of the hypothesis that the early earth environment was void of oxygen? ( 2 points) data showing the concentrations of gases extracted from rocks fossil evidence regarding the origin of eukaryotes generally accepted atmospheric conditions molecular evidence based on evolutionary traits.

The yellow river is also known as the huang he river? true or false

Which of the following is evidence to the past existence of glaciers?