Env. Mid-Term Review

Which type of biodiversity helps a species adapt to changing conditions?

The variable that scientists manipulate is the

Which area would have the highest population density?

The relationship between an amount of a substance and the response it causes is called

In aquatic ecosystems, light availability is a function of water

A deer antler is

When rock and soil slide down a slope, it is called a(n)

Why are fetuses more sensitive to harmful chemicals?

An emerging disease sometimes causes a

The illegal capture or killing of an organism is called

What happens to replacement fertility rate if the death rate is higher than average?

This section of Earth's core consists of molten rock

The name given to the processes by which nutrients cycle

Scientists protect species to avert

Tropical regions with more rain than deserts but less than dry forests

System that allows companies to sell unused pollution to other companies

Sleeplike state of inactivity to avoid hot, dry periods

What is the first step of the scientific method?

Which of the following characteristics are used to classify biomes?

Different breeds of dogs are a result of

Photosynthesis and Chemosynthesis are done by

Most of the energy lost between trophic levels is dissipated as

Heating and cooling, gravity, wind, & differences in water density create

Which statement about science is accurate?

A chance event leads to this type of change in the gene pool

A cow receives protection and care from a farmer. The farmer receives milk. This is an example of

Earthquakes, fires, tornadoes, and droughts are all examples of

Animals adapt to changes in their

Total fertility rates are decreasing. Which factor would explain this trend?

Which ocean zone has the lowest productivity?

What process is responsible for birds high on the food chain being exposed to high levels of DDT?

The basic unit of matter is the

Different species of birds occupying different levels of the same tree is an example of

All modern continents were once joined into a super continent called

Population increase is determined by

What will happen to the population if the fertility rate is lower than the replacement fertility rate?

Wildlife corridors help solve and prevent

Animals following the seasonal rains in the Serengeti is an example of

What percentage of the water on Earth is freshwater?

Which is a powerful storm that forms over the ocean in the tropics?

A bald eagle catching and eating a fish is an example of

From smallest to largest, an ecologist studies life at these scales

Which of these is a biological hazard?

Phospohorous is primarily used by humans as

This principle states that matter cannot be created or destroyed

One of the final goals of captive breeding programs is to

Part of the Earth containing living things

A wetland naturally purifying water is an example of a(n)

What has caused the carrying capacity for humans to increase?

Fleas live on mammals and drink their blood. This is an example of

Organisms that can create their own food are called

The best guess for the total number of species on Earth is

What data are shown on a standard climatograph?

In a food web, which kind of species would you expect to be least abundant?

Today, species loss seems to be

You discover a poisonous frog and a bird that eats the frog. Which hypothesis makes sense?

Which government agency is in charge of enforcing environmental laws?

Mammal adaptations for polar regions

Plants releasing water into the atmosphere is called this

Biome with highest net primary productivity

Humans have existed for about _____ years

What decreases species diversity?

Measure of amount of salts dissolved in water

Which particle is negatively charged?

Areas of the world with high numbers of species found nowhere else

A population with an equal number of young, middle-age, and old animals will

What is the primary cause of Dead Zones?

The type of bond in which electrons are shared

Cigarette smoking or a lack of exercise are considered

Scientists find a group of hornbills in a new area. They represent a

A species that is likely to become endangered in all or part of its range is called a(n)

What statement about the current pattern in human population growth rates is true?

Which is a dangerous, odorless gas?

The variable that scientists do not manipulate

Over time, the amount of toxicant in an organism builds up due to