Ecosystems
Seasons, Rocks, Soil and Water
Atmosphere and Cycles
Populations
Terms
100

This refers to living elements of an ecosystem.

What is biotic?

100

A term meaning "surroundings".

What is Environment?
100

Water cycle, oxygen cycle, nitrogen cycle, phosphorus cycle, carbon cycle.

What are biogeochemical cycles?

100

This strategy involves little to no parental care and having lots of offspring.

What is the r-stragetist?

100

In this process, organisms better adapted to their environment survive and produce more offspring.

What is Natural Selection?

200

The percentage lost at each level of the trophic pyramid.

What is 90%?

200

The belief that things happened really slowly over time with gradual changes. Holds that the earth is Billions, not thousands of years old.

What is Uniformitarianism?

200

This element is a limiting agent for plants and algae. If there is too much in a lake, the algae will take over.

What is phosphorus?

200

This type of survivorship curve describes organisms that have a constant mortality rate their whole life cycle.

What is the Type II curve?

200

Organism that eats producers in a trophic pyramid.

What are primary consumers?

300

These show where the energy is moving in a food web.

What are arrows?

300
Seasons are caused by this phenomenon.

What is the Earth's tilt?

300
This cycle involves both photosynthesis and cellular respiration.
What is the carbon cycle?
300

2.1

What is the replacement birth rate for humans?
300

Relationship where both species benefit.

What is mutualism?
400

This biome has all 4 seasons and moderate to cool temperatures.

What is a temperate forest?

400

The allowable dissolved particles for drinkable water.

What is 500ppm?

400
The part of the atmosphere that has the ozone layer.

What is the stratosphere?

400

1 in 12

The number of people worldwide who are malnourished.

400

Ecosystems depend on these specific types of organisms for the survival of the rest of the species.

What are Keystone Species?
500

The 3 Types of biodiversity.

What are species, habitat, and genetic?

500

This type of soil retains water but not air very well.

What is silt?

500

This phenomenon is caused by the earth's rotation and its effect on the winds and ocean currents.

What is the Coriolis Effect?

500

Populations will switch from exponential growth to logistic growth when this is reached.

What is the carrying capacity?

500

Coal, oil, natural gas

What are fossil fuels?