ES #1

A student conducted a study to see if environmental precipitation amounts effect the amount of carbohydrates in a cactus. What is the dependent variable in the experiment?

Human's have a greater impact on the Earth's environment than other species of organisms because...

humans have a greater ability to modify their surroundings

humans consume the most biomass of all other organisms

humans have a faster metabolism

humans are omnivores

What does NOT cause an increase in water pollution

Increased industrialization

Use of pesticides

Use of herbicides

Use of biological controls for pests

One example of an environmental problem caused by human impact that was addressed and solved by nations working together is...

the extinction of the Passenger Pigeon

the melting of the Greenland Ice Sheet

the depletion and restoration of the ozone layer

the destruction of the Great Barrier Reef

What have humans done to help prevent certain species from becoming extinct?

Mated organisms of different species to create more viable species

Placed endangered species in captivity

Increased wildlife management and protected habitats

Trapped the species' predators

Climate change on the Earth due to human activity is...

not shown by data

a scientific consensus

a debatable concept

a political agenda

Release of CFCs and similar compounds are a possible cause of...

increase in atmospheric carbon dioxidee concentration

greenhouse gas build-up in the lower atmosphere

acid rain in the northeast U.S.

destruction of ozone in the upper atmosphere

Topsoil and groundwater are..

in unlimited supply

found in tropical rain forests

non-replicable resources

renewable resources

Carbon dioxide and other gases prevent some heat from escaping Earth's atmosphere. This is known as the...

warming effect

carbon effect

carbon dioxide effect

greenhouse effect

One of the main reasons coal is used to produce electricity is...

its environmental record

its scarcity

its inexpensive economic cost

its ease in shipping

Nitrogen is a critical requirement for living organisms because it is a major component of...

nucleic acids and proteins

lipids and proteins

carbohydrates and lipids

water and carbohydrates

Rivers, springs, and aquifers are all...

sources of fresh water

located above ground

human-made structures

frozen in winter

A technology being rediscovered due to water shortages is...

reverse osmosis

rainwater harvesting

water recycling

wastewater usage

What can NOT be grown for biofuel?

Rock salt crystals

Corn

Soybeans

Sawgrasses

What is NOT an example of a symbiotic relationship?

Commensalism

Predation

Parasitism

Mutualism

Geothermal energy found in Virginia can be used for...

drying agricultural crops

space and hot water heating

cooling towers

fission