Climate Change and Greenhouse gases.
Energy and Sustainability
Plate Tectonics and Earth Systems
Population Ecology
Ecosystems and Food Webs
100

Burning fossil fuels releases large amounts of this greenhouse gas, which traps heat in Earth's atmosphere.

What is carbon dioxide (CO₂)?

100


Unlike coal and oil, these energy resources replenish naturally.

What are renewable energy resources?

100

At these plate boundaries, plates move toward each other.

What are convergent boundaries?

100

The maximum population size an environment can support.

What is carrying capacity?

100

These organisms form the base of most food webs.

What are producers?

200

Scientists have observed that as atmospheric CO₂ levels increase, this generally increases as well.

What is global temperature?

200

This renewable energy source is less effective in regions with little sunlight.

What is solar energy?

200

Deep ocean trenches form primarily through this process.

What is subduction?

200

Population growth that slows as resources become limited follows this pattern.

What is logistic growth?

200

This process converts sunlight into chemical energy for ecosystems.

What is photosynthesis?

300

As Earth warms, more water evaporates, creating more warming through this type of feedback.

What is a positive feedback mechanism?

300

Producing electricity without direct carbon emissions is an environmental advantage of this energy source that uses moving air.

What is wind energy?

300

Underwater volcanic activity can create these submerged mountains.

What are seamounts?

300

Oysters and many fish species exhibit this survivorship pattern.

What is a Type III survivorship curve?

300

A severe drought that reduces plant growth would most directly affect these consumers first.

What are herbivores (primary consumers)?

400


The meat industry contributes to greenhouse gases through livestock methane production and this land-use change.

What is deforestation?

400

Replacing fossil fuels with renewable energy reduces emissions of this greenhouse gas.

What is carbon dioxide?

400

The collision of continental plates often forms these major landforms.

What are mountains?

400

Food, water, and habitat space are examples of these influences on population size.

What are limiting factors?

400

Increased photosynthesis allows ecosystems to support larger populations because it increases this.

What is available energy (primary productivity)?

500

The long-term storage of carbon in forests, soils, and underground formations is called this.

What is carbon sequestration?

500

This process conserves raw materials by turning used products into resources for new products.

What is recycling?

500

During this process, one tectonic plate sinks beneath another into the mantle.

What is subduction?

500

Ecosystems with high levels of this are generally more stable and resilient.

What is biodiversity?

500

Replacing a rainforest with a single crop plantation usually decreases this ecological characteristic.

What is biodiversity?

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