30 Jan highly productive

Question
Unit V Assessment

Question 1

Which of the following is a density-dependent factor?

Question 2

Approximately how many people are on Earth today?

Question 3

An owl eating a seed-eating mouse is an example of what?

Question 4

A relationship which benefits one species and does not affect the other is called __________.

Question 5

On a warm summer day in August, you decide to go for a walk through a new housing development that was built near your home a few years ago. As you walk by the pond that is in the center of this development, you notice an unpleasant smell. Then, you see that the pond is full of green algae, and there are dead fish floating on the surface. This is a pond that used to be clean and clear, and you used to play in it as a child. What could have most likely caused this change?

Question 6

Match the term to its definition or characteristic.

Question

Ecological niche

role or job of a species in an ecosystem

Predator

species that survives by eating another species

Competition

when two species require the same resources within the same habitat

Tropical Rain Forest

biome with the greatest biodiversity

Desert

biome with less than 20 inches of rain per year

River

flowing water moving in one direction

Estuary

highly productive habitat where fresh and saltwater mix

Bioaccumulation

the process that causes small amounts of pollutants to be concentrated in higher amounts in animals higher up on the food chain

Ecological footprint

the amount of land needed to support the human activity of that area

Savannas

areas in Africa where elephants and other large animals graze