Practice Test Answers

How does mining impact the environment?

A relationship in which one organism benefits while the other is neither harmed nor helped is called

How would a harsh winter most likely affect the rabbit population size?

What term includes all the biotic and abiotic factors in an area?

Natural resources are classified as renewable and nonrenewable. What is the difference between the two?

A population of zebras experienced ten births, six deaths to predation, three deaths to disease, three individuals joining the population, and zero individuals leaving. What is happening to the population growth?

How do limiting factors most affect population size?

Barnacles and whales have a commensalistic relationship in which barnacles benefit. What would most likely happen to the whale population if the barnacle population decreased?

Pandas eat bamboo for energy. What are pandas classified as?

The tundra ecosystem of Alaska is known as a “cold desert.” It receives very little precipitation, about four inches annually. However, it is rich in wetlands due to permafrost, which traps moisture close to the surface. The temperatures vary widely, also producing persistent winds. Although treeless, the Arctic tundra is an abundant ecosystem. Many organisms find their niche here including many migratory bird species and mammals such as caribou, foxes, bears, and small rodents. Which factor of the tundra ecosystem is biotic?

Which of these could result in secondary succession?

What is the primary source of energy in a food chain?

A conservation biologist has determined the status of the ecosystems in a protected area, as shown in the table. Based on the table, which part of the pie chart represents secondary succession? Status of ecosystems Percentage of protected area Primary succession 10 Secondary succession 30 Barren land 5 Established community 55

What could explain the curve in this population growth graph?