Ecology

Which sequence is from simplest to most complex?

All communities in an area

Which is the correct sequence of climate zones from the North Pole to the equator?

Which is NOT an abiotic factor in an ecosystem?

Lowest level of the food chain

The ultimate source of all energy is the 

Biome with trees that lose their leaves in the fall, temperate, lots of plants and animals

Always a primary consumer

Group of organisms of the same species

A large geographic are classified by climate and type of organisms is called a 

Two foxes fighting over a rabbit

Eats plants and animals

A relationship where both organisms benefit is

Mode of eating for a tiger

Group of populations

Biotic factors in a community are classified according to their

Permafrost is

A cold biome with lots of cone bearing trees and lower rainfall 

Which is not characteristic of the rainforest biome?

Every food chain must have a