Human Impact on the Environment — Unit test Answers

Which describes a disruption in the water cycle that could affect photosynthesis?

How does conservation affect biodiversity?

How do limiting factors most affect population size?

If a deer eats grass, what percentage of energy will the deer acquire from the grass?

Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the zooplankton get from the phytoplankton? phytoplankton zooplankton bivalves sea ducks bald eagle

Humans process some foods by adding chemicals to reduce harmful bacterial growth. This allows foods to be edible for longer periods of time. Which best describes the advantages of food processing?

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

What is the primary source of energy for food chains in an ecosystem?

Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which process can help counteract these human interactions?

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?

Which of the following could result in secondary succession?

How could the loss of biodiversity affect humans?

Water exits the leaves of plants and enters the atmosphere. What is this process called?

A population of wolves in Wyoming experienced a rapid decline. Scientists found that 20 wolves died from rabies, 15 wolves died from mange (a parasitic mite), and 10 wolves died from natural causes. Wyoming experienced a recent drought, and many populations, including deer, bison, and bear, have diminished in the past year. What is best described in this scenario?

What would happen to the size of the herbivore population if the producer population decreased?