Ecology

An organism's place in the biotic environment and its rold in an ecosystem is a

• Niche

• Habitat

• Epitope

• Habit

A relationship in which one organism benefits and the other is not harmed or benefited is called_________.

• Mutualism

• Predation

• Commensalism

• Parasitism

Bacteria which convert nitrogen gas into bio-available forms of nitrogen, such as ammonia and nitrate, are known as ___________.

• De-nitrification bacteria

• Oxidizers

• Nitrogen fixing bacteria

• Buffers

Which greenhouse gas is produced by human activity and thought to be the cause of climate change?

• Water

• Carbon Dioxide

• Nitrogen

• Hydrogen

An interaction in which one organism benefits and the other organism is harmed is classified as _________.

• parasitism

• mutualism

• commensalism

• contact

What do the arrows in a food chain represent? (Choose all that apply)

• transfer of energy

• transfer of biomass

• always point towards the organism being consumed

• all organisms will have an arrow pointing at it.

What percentage of energy is passed on from one trophic level to another?

• 10

• 90

• 50

• 40

How much energy is lost between trophic levels?

• 10

• 90

• 40

• 50

After a forest fire occurs the type of succession that follows is called ______.

• Primary

• Secondary

• Tertiary

• none

The greenhouse effect is

• Light is reflected into the atmosphere

• Greenhouse gases allow light in, but trap heat

• Greenhouse gases allow heat and light to escape

• None of the above