Which of the following would be the BEST location for a hydro-electric power plant?
A) in a dry, open field that receives direct sunlight
B)near a large river with a waterfall
C)beside a small, human-made pond
D)in a dense and fast-growing forest

Which represents the cross between parent plants if one is heterozygous for yellow-colored pods and the other is homozygous for green-colored pods? yy  ´    ´    ´    ´  yy

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems