What property or quality of a substance gives the substance the ability to move, do work, or cause changes?

• Energy
• Photosynthesis
• Glucose
• Work

During which process do green plants capture light energy from the Sun?

• cellular respiration
• photosynthesis
• growth
• chemical energy

During cellular respiration, ___________ and ___________ are changed into carbon dioxide, water,and energy.

• sugar and nitrogen
• energy and oxygen
• glucose and oxygen
• glucose and nitrogen

In a pyramid of energy, how much energy is lost from one level to the next?

• 50%
• 90%
• 75%
• 10%

What is one of the main sources of chemical energy for both plants and animals?

• carbon dioxide
• water
• fertilizer
• glucose

Which of the following is an example of a decomposer?

• worm
  worm
• rabbit
• grass
• coyote

Which of the following is an example of a primary consumer?

• worm
• rabbit
• grass
• coyote

A food chain is shown in the diagram. For the food chain shown, which of the following changes would have the most severe consequences?
Grasses --> Crickets --> Mice --> Hawks

• A drastic decrease in rainfall, causing  drought.
• The poaching of predatory hawks by game hunters.
• The introduction of a second predator that eats field mice.
• A parasitic infestation that reduces the cricket  population.

Grass is consumed by both deer and cows. This is an example of

• a food chain
• a food web
• a trophic level
• a decomposer

The concentrations of chemicals (such as DDT) are found to be greater in animals that are higher onthe food chain. What is this called?

• biological magnification
• poisoning
• chemical movement
• biological destruction