Which statement best describes the theory of plate tectonics?
plates sometimes move closer to one another.
sections of earth that shift are part of earth's asthenosphere.
sections of earth's continents are in slow, constant movement.
parts of the ocean floor move as they are carried by rift valleys.
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Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?