APES Review Units 1-4

Front

What is the primary source of nitrogen and phosphorus to rivers?

Back

Fertilizers, animal waste, and wastewater are primary sources of nitrogen and phosphorus to rivers.

Front

What is the process called when oceanic plates move apart and new oceanic crust is formed?

Back

Seafloor spreading.

Front

What is the relationship called when one organism benefits while the other is unaffected?

Back

Commensalism.

Front

Which natural phenomenon is NOT driven by the Sun’s radiation?

Back

Plate tectonics.

Front

What does turbidity measure in water?

Back

The measure of suspended particles in the water.

Front

What is the term for the interaction where both species benefit?

Back

Mutualism.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil.

Front

What is the significance of the nitrogen cycle?

Back

The nitrogen cycle is crucial for converting nitrogen in the atmosphere into forms usable by living organisms.

Front

What is the definition of biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Front

What is an example of a keystone species?

Back

Sea otters are considered a keystone species because they help maintain the balance of kelp forest ecosystems.