Exam 30: Conserving Earths Biodiversity

Native Americans developed an agricultural method using the Three Sisterscorn, squash, and beanswhich became the core of their diet. The beans increased the level of nitrogen in the soil. The corn requires high levels of nitrogen and provides a support for the beans to climb and receive more light. The large leaves on the squash shade the ground and limit weed growth. This agricultural method:

Habitat fragmentation increases the breeding success of a species. True or False?

The mass extinction currently taking place is most likely due to human activities. True or False?

The 1993 flooding along the Missouri River was partially caused by:

Wildlife corridors are designed to keep breeding populations isolated from one another. True or False?

Human population growth poses a threat to sustainability. True or False?

________ happens when people hunt, fish, or harvest a species at a rate that exceeds its natural capacity to sustain itself.

Comparison of the human ecological footprint to Earth's biocapacity suggests that:

The ________ industry is characterized by people traveling to visit unique biological communities.

Why is genetic diversity within species important?

In the United States, most Biosphere Reserves are found in:

Traditional medicines, which are used by about ________% of people worldwide, are primarily derived from wild plants.

Coastal wetlands, or marshes, serve to:

The greatest threat to newly hatched sea turtles is:

Forests influence local climates by:

________ occurs when human developments break up natural ecosystems into smaller areas.

Organic farming involves:

Why is it important to preserve the genetic diversity of the wild relatives of crop plants?

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

The ________ is a keystone predator in Yellowstone National Park.