Exam 31: Conserving Earths Biodiversity

The variety and abundance of the different species that make up a community is the _________of a community.

A rapidly growing recreation industry where people travel to visit unique biological communities is called_________ .

In aquatic environments, high levels of nutrients can act as pollutants.

Habitat fragmentation increases the breeding success of a species.

How can sustainable fishing be accomplished?

Which of the following is NOT an example of how plant communities continue to support healthy ecosystems?

What human activity can cause flooding along riverbanks?

The detritivores and decomposers in soil are responsible for recycling nutrients.

An estimation of the area of the Earth?s surface a human requires to produce the resources he or she needs and to remove the wastes he or she produces is called a(n)_________ .

The discipline of _________measures the trade-offs between the monetary value of human developments and the loss of ecosystem services.

Cutting down rain forests may result in the local climate becoming

In heavily forested areas, the trees reduce evaporation and disrupt the normal water cycle.

In the technique of _________cropping, farmers do not plow, but they leave leftover cover crops in the fields after harvest to create mulch for the next year?s crops.

Rich consumers support sustainability and biodiversity by paying high prices for rare products, such as elephant-tusk ivory, rare orchids, and exotic birds.

Why is the term sustainable development nearly an oxymoron?

Comparison of the human ecological footprint to Earthʹs biocapacity suggests that

Trees alter runoff patterns, causing increased erosion and potential flooding.

Which human activity is NOT a threat to biodiversity?

Forests influence local climates by

Overexploitation of many species has increased due to the growing demand for wild animals and plants, and