Biology Chapter 4 Ecosystems and Communities

An increase in the greenhouse effect causes am increase in

• Temperature

• Carbon Dioxide

• Oxygen

• Water

A small valley where the average temperature is usually higher than that of the surrounding countryside has its own...

• Weather

• Climate

• Rainfall

• Microclimate

A relationship in which one organism is helped and another organism is neither helped nor hurt is called?

• Parasitism

• Mutualism

• Competition

• Commensalism

The relationship between a tick and its host is...

• Mutualism

• Parasitism

• Commensalism

• Succession

Fires, hurricanes, and other natural disturbances can result in...

• Commensalism

• Competition

• Parasitism

• Succession

The first organisms to repopulate an area affected by a volcano eruption are called...

• Keystone Species

• Climax Species

• Primary Producers

• Pioneer Species

In a tropical rainforest, the dense covering formed by the leafy tops of tall trees is called the...

• Canopy

• Taiga

• Niche

• Understory

Permafrost characterizes the biome called?

• Taiga

• Boreal Forest

• Savanna

• Tundra

Organism that live near the ocean floor are called...

• Parasites

• Benthos

• Plankton

• Mangroves

The factor that generally has the greatest effect on determining a region's climate is its...

• Longitude

• Abundant Plant Species

• Distance From The Equator

• Closeness To A River