Discuss how the concept of "survival of the fittest" was developed and what it means.

You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical