Environmental Science & Natural Resources Flashcards

What is the primary purpose of a buffer zone along a stream or river?

Answer: To filter runoff and protect the waterway from pollutants and erosion

Riparian buffer zones of vegetation along waterways intercept runoff, filter pollutants, stabilize banks, and provide habitat.

Which of the following is an example of a biotic factor in an ecosystem?

Answer: Predatory fish

Biotic factors are living components of an ecosystem; predatory fish are living organisms that interact with other species.

What gas do plants absorb during photosynthesis?

Answer: Carbon dioxide (CO2)

Plants absorb carbon dioxide (CO2) from the atmosphere during photosynthesis and convert it into glucose using sunlight energy.

Which practice best reduces soil erosion on a steep agricultural slope?

Answer: Contour plowing across the slope

Contour plowing follows the natural contours of the land, slowing water runoff and significantly reducing soil erosion on slopes.

What does 'sustainability' mean in the context of natural resource management?

Answer: Meeting present needs without compromising future generations' ability to meet theirs

Sustainability means using resources in a way that meets today's needs while preserving them for future generations, balancing ecological and human needs.

Which ocean zone receives enough sunlight to support photosynthesis?

Answer: Photic zone

The photic (sunlit) zone extends from the surface to about 200 meters deep, where sunlight penetrates sufficiently to support photosynthesis.

What is the main environmental concern associated with hydraulic fracturing (fracking)?

Answer: Contamination of groundwater and induced seismic activity

Hydraulic fracturing raises concerns about groundwater contamination from chemicals and produced water, as well as earthquakes triggered by wastewater injection.