1. What is biodiversity? 2. Briefly describee the three categories of biodiversity:

* Genetic

* Species

* Ecosystem

3. A group of organisms of one species is called a .

4. What can threaten biodiversity?

5. When a species changes in response to change in the environment, we call this .

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?