Geologic time
Nutrient Cycles
The greenhouse effect
Ecology stuff
100

How many mass extinction events occurred on planet Earth before humans appeared?

5

100

In what molecule is carbon mainly stored in the atmosphere?

CO2

Carbon dioxide

100

Gasses like CO2 trap heat from the sun in the Earth's atmosphere. What do we call this effect that keeps Earth warm?

The greenhouse effect

100

What is the different between a niche and a habitat?

Niche: What an organism does; its role in an ecosystem

Habitat: Where an organism lives

200

What do MYA and BYA stand for?

Million years ago

Billion years ago

200

What type of organisms remove carbon from the atmosphere?

Photosynthesizers like plants

(They absorb CO2)

200

Who is currently causing climate change?

Humans

200

Identify this process:

The sun heats water and gives its molecules enough energy to escape into the atmosphere as water vapor.

Evaporation

300

How old is planet Earth?

4.6 billion years old

300

What process do plants perform that removes carbon from the atmosphere?

Photosynthesis

300

What is released into the atmosphere when humans burn fossil fuels?

(that we talked about a lot)

Carbon dioxide (other things also)

300

Name 3 limiting factors for a population

Any natural disaster (tornado, flood, etc.)

Any resource (food, water, shelter, space)

Not enough mates

Disease

400

Define a mass extinction event.

75% or more of species go extinct in a "short" geologic time period

400

Name the three elements that we learned must cycle through biotic and abiotic components in an ecosystem.

Carbon

Nitrogen

Phosphorus

400

Name a human activity that releases carbon into the atmosphere.

Burning fossil fuels

Respiration (exhaling CO2)

Deforestation

Burning campfires

400

The greatest number of individuals of one species that an area can support over time is called its...

Carrying capacity

500

What were the first living organisms on planet Earth like?

Single celled prokaryotes

500

Name the process that converts atmospheric nitrogen (N2) into a form that plants can use in the nitrogen cycle?

Nitrogen Fixation

500

Name 2 effects of climate change that we learned about...

Sea level rise

Loss of sea ice

Global warming

Mass extinction

(Also ocean acidifcation)

500

When an ecosystem changes over time following a disturbance.

AND

The name for the first species to colonize a new area.

Ecological succession and pioneer species

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