Ecology Review

Clover is eaten by a mouse. The mouse is eaten by an owl. This is an example of what?

• an omnivore

• a herbivore

• an abiotic element

• a food chain

Many populations make up a(n)

• biosphere

• organism

• biological community

• ecosystem

What is an example of an abiotic element changing an area?

• two species of bird competing

• a new type of grass

• humans

• wind knocking down trees

Trees getting energy from the sun is an example of a

• consumer

• producer

• parasite

• decomposer

Which directions do arrows in food webs and chains face?

• to the left

• towards which animal is bigger

• toward the organism that is eating

• toward the organism that is being eaten

If scientists are studying wolves, elk, trees, and birds, but not the soil and water, what level of organization would they be studying?

• an individual organism

• biological community

• population

• ecosystem

A population is

• one individual

• members of one species in an area and time

• biotic and abiotic elements of the area

• nonliving elements of a habitat

Levels of organization from smallest to larges are

• organism, pop., biosphere, ecosystem, biological community

• organism, pop., biotic elements, abiotic elements, biological community

• biosphere, biome, ecosystem, biological community, pop., organism

• organism, pop., biological community, ecosystem, biome, biosphere

Which are abiotic? (select all that apply)

• grapes

• soil pH

• acorns

• salinity

• temperature

Organisms taht make their own food from the sun

• consumers

• decomposers

• heterotrophs

• producers