Answer:
An exoskeleton is a hard outer layer that protects an animal's soft insides.
Explanation:
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Answer:Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.
Explanation:
Microevolution refers to evolution at or below the species level.
Microevolution is the change in gene frequency that takes place over time within a species or population. Microevolution is usually observed over a relatively short amount of time and it occurs as a result of four different processes which include gene flow, genetic drift, selection (natural and artificial), and mutation.
