Ecosystems
Trophic Levels
Populations
Nutrient Cycles
Human Impact
100

What does Biotic mean?

What is a living, or previously living organism.

100
What is the lowest trophic level? (Be specific)
What is Autotroph
100

Definition of population

What is group of organisms of the same species in the same place at the same time ?

100

What effect are humans having on the long term carbon cycle?

What is combustion leads to warming and marine acidification.

100

Name the three main impacts humans have on the ecosystem

What is habitat destruction, disruption of the carbon cycle, and overuse of resources

200
What is an ecosystem?
What is all living and non-living organisms in an area.
200
What is the difference between a food web and a food chain?
A food web is very simple with few levels, whereas a food web can get very complex.
200

Define a carrying capacity

What is the total population that can be surrounded by resources in a given ecosystem

200

What are the four major nutrient cycles?

What is Water, Carbon, Nitrogen, Phosphorous

200

Name an effect of overuse of resources

What is starvation, dehydration, loss of energy form, or overcrowding

300

Name two abiotic factors.

What is Nutrients, Water, Soil, and Air

300
What is at the top of the energy pyramid?
What is WRONG -300 FOR YOUR GROUP (Jk Decomposers)
300

Immigration

What is it called when an organism moves out of an environment?

300

What process in the carbon cycle draws CO2 out of the air?

What is photosynthesis

300

How do humans disrupt the long-term carbon cycle?

What is burning fossil fuels

400

Which organism does not benefit in parasitism?

What is Host.

400
Explain why food chains do not usually exceed 3 to 4 levels.
Higher trophic levels have less energy and, therefore, can support fewer organisms.
400

Name 4 if the 6 factors that influence the population size.

What is birth rate, death rate, immigration, emigration, growth rate, resource availibility

400

What organisms in the soil transform N2 into Ammonium and Nitrates?

What is Nitrogen-fixing bacteria

400

An animal that is introduced into a new environment that it is not native to.

What is an invasive species?

500

What is commensalism?

What is a relationship in which one species benefits and the other is not effected.

500

Explain why the same area can support a greater number of herbivores than carnivores.

There are more autotrophs than there are consumers, because of renewable resources.

500

uniform, clumped or random

What are types of population distribution?

500
The human digestive system

 An open system

500

The difference between renewable and nonrenewable energy.

What is fossil fuels compared to reusable options (example- solar)