Exam 3

Front

What are the Milankovitch cycles?

Back

Long-term changes in Earth's orbit and tilt that affect climate.

Front

Which trophic level contains the most biomass in a terrestrial ecosystem?

Back

Primary producers.

Front

What method is used to estimate NPP in large areas?

Back

All of the above (Harvest biomass, Remote sensing, Eddy covariance).

Front

How do greenhouse gases contribute to global warming?

Back

By absorbing and radiating heat back to Earth.

Front

What effect does habitat fragmentation have on ecological processes?

Back

It facilitates the spread of invasive species.

Front

What is biomass?

Back

The total mass of living matter in a given area.

Front

What are primary producers?

Back

Organisms that produce their own food, usually through photosynthesis.

Front

What is NPP?

Back

Net Primary Production, the rate at which plants produce energy minus the energy they use.

Front

What is the role of greenhouse gases?

Back

To trap heat in the atmosphere and keep the Earth warm.

Front

What is habitat fragmentation?

Back

The process where large habitats are broken into smaller, isolated patches.