Emissions Impossible
Life through the Ages
Eco-Nomics
Solar Powered
Earth's Extreme Makeover
100

This region is currently warming faster than anywhere else on the planet.

What is the Arctic?

100

The number of organisms in a given are is referred to as this. It generally increases over time after a mass extinction event occurs.

What is biodiversity?

100

Which type of agriculture do humans use more arable land to produce? Plant or animal products?

What is animal products?

100

Photosynthesis, the nitrogen cycle, and the carbon cycle are all examples of these.

What are biogeochemical cycles?

100

As climate zones shift, species may struggle to adapt, potentially causing these losses of plant and animal populations.

What are extinctions?

200

This proxy is used to study prehistoric concentrations of carbon dioxide.

What are ice cores?

200

Sea otters are keystone species for kelp forests. When they are removed from kelp forests along California's coast, this organism becomes dominant. 

What are purple sea urchins?

200

This rule states that only 10% of energy is transferred from one trophic level to another.

What is the 10% Rule?

200

The rule that states animal appendages are typically smaller at high elevations and in high latitudes.

What is Allen's Rule?

200

The ice sheet on this landmass is melting faster than the other one.

What is Greenland?

300

Carbon dioxide concentrations are often given in this unit of measurement (ppm):

What are parts per million?

300

The Pleistocene Epoch is well known for these large critters.

What are megafauna?

300

When two or more species share similar features but are not genetically related.

What is convergent evolution?

300

When there are too many nutrients in the water, this process may occur when sunlight and water are available.

What is eutrophication?
300

This international agreement aims to limit global warming to well below 2 degrees Celsius (preferably 1.5°C) and includes commitments from nearly every country in the world.

What is the Paris Agreement?

400

Temperatures in the stratosphere are changing in this way as a result of anthropogenic climate change.

What are decreasing?

400

These are indirect lines of evidence that can be analyzed to better understand phenomena that can't be measured directly. 

What are proxies?

400

This is the term for the amount of energy produced through photosynthesis.

What is primary productivity?

400

These organisms, such as phytoplankton and algae, harness sunlight to produce energy through photosynthesis, forming the foundation of aquatic food webs.

What are primary producers?

400

This report on the state and future of the climate is presented to the White House every 4 years or less.

What is the National Climate Assessment?

500

This is the highest greenhouse gas emissions scenario (RCP) presented by the IPCC.

What is RCP8.5 (Representative Concentration Pathway 8.5 watts/m2)

500

When an organism sets up a new reproducing population in an area, this has occurred.

What is dispersal?

500

Maple trees release these winged seeds, called samaras, which spin as they fall, taking advantage of this natural force to spread far and wide.

What is wind dispersal?

500

These organisms contain 10% of the energy produced by photosynthesis.

What are primary consumers?

500

This is causing tropical cyclones to be more intense and occur more frequently?

What is anthropogenic climate change?