Why is the world's loss of biodiversity a source of concern?

A focus of environmental science not studied in ecology is the

Which of the following describes the depletion of a renewable resource?

The "tragedy of the commons" describes the conflict between

A sustainable world would be characterized by the

An ecological footprint is the

A resident of ______is likely to leave the largest ecological footprint.

"Tragedy of the Commons" addresses the conflicts associated with what environmental challenge?

Data that are in the form of numbers that can be collected and measured is called

The group that does not receive the experimental treatment in an experiment is the

In an experiment, the factor of interest (what the scientist wants to know) is called the

The average mass of a wolf in a pack of wolves is an example of

The experimental method includes which of the following steps?

Which step in the experimental method are scientists conducting when they photograph birds in flight?

What essential characteristic does a good experiment have?

When making a decision about whether or not to build a dam, you are considering an economic value when you ask which of the following questions?

Which of hte following are producers of oxygen?

What part of Earth encompasses all areas where organisms can obtain the energy they need; therefore life can occur?

Which of the following is not an ecosystem?

The energy in most ecosystems comes from

The organisms most likely to belong to the same species are

The community of a pond is made up of all the

Most scientists classify organisms into

Which of the following converts nitrogen in the air into a form plants can use?

Which of the following best describes a population?

Which of the following describes soil and temperature in an ecosystem?

One way that bacteria and fungi are important to the environment is that they

Which of the following is not a biotic factor in an ecosystem?

Single- celled organisms with cell walls but not nuclei are

Which two kingdoms contain organisms that can use energy from the sun to make food?

Which of the following statements is not correct?

Which kid of organism obtains energy only from producers?

If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for the bird to use?

Which gas makes up 78% of our atmosphere but can be used by plants only when transformed by bacteria first?

Which of the following are photosynthetic organisms?

Consumers are organisms that

Plants play a crucial role in the carbon cycle because they

The bacteria that live within the roots of a soybean plant are a critical part of the nitrogen cycle because they

Which organism is likely to be in the bottom trophic level of a food chain?

What term is used to refer to the many feeding relationships that are possible in an ecosystem?

Which of the following is responsible for making nitrogen in the atmosphere usable by living organisms?

If you visited a savanna, you would likely see

Which of the following best describes a tropical rain forest?

Animals that live in the desert

Deserts are

The tundra

Taiga is

Which of the following is not true about temperate deciduous forests?

As you travel from the North Pole toward the equator, you would expect to see

The main factor that determines what type of plants grow in a biomes is

Tropical rain forests are threatened by

Adaptations of desert animals that help them survive in the hot, dry desert often include