Question

QUESTION 15

The intermediate disturbance hypothesis has affected __________________________.

		biomagnification of DDT
		decisions regarding the management fire in Yellowstone National park
		the way that Shannon’s diversity index is calculated
		the management of nutrients entering eutrophic lakes

1 points   

QUESTION 16

We live in this biome. It is characterized by deciduous trees, intermediate amounts of rainfall, and large seasonal variations in temperature.

		Temperate broadleaf forest
		Temperate grassland
		Chaparral
		Northern coniferous forest (aka Tiaga)

1 points   

QUESTION 17

What is responsible for the different seasons?

		the 23.5 degree tilt of the earth’s axis
		warm and cool ocean currents
		the rotation of the earth on its axis
		the shape of the earth’s orbit (It is farther from the sun in the winter.)

1 points   

QUESTION 18

What term describes a group of individuals of the same species living in a particular geographic area?

		Flock
		Community
		Herd
		Population

1 points   

QUESTION 19

Why might some species exhibit a clumped distribution?

		The resources upon which they depend are unevenly distributed.
		Their reproductive rate is very fast.
		They are dispersed by wind.
		They are trying to avoid members of their own species.

Answer 1

15. The management of nutrients entering eutrophic lakes

16. Temperate broadleaf forest

17. The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun. The Earth has a tilt of 23.5 degrees relative to the "ecliptic plane" (the imaginary surface formed by it's almost-cicular path around the sun).

18. In biology, a population is all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

19. Clumped dispersion is often due to an uneven distribution of nutrients or other resources in the environment. It can also be caused by social interactions between individuals.