The roots of the plant in the diagram above are exhibiting which behavior in response to external stimuli?
A. Gravitropism B. Thigmotropism. C. Auto tropism. D. Phototropism

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

What are the ingredients of oobleck?

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u. s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u. s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u. s.