Quick Review

The act of using one or more of your senses to gather information and taking note of what occurs.

• Observation
• Inference
• Prediction

What can be learned about a fossil using relative-age dating?

• the fossil's age in years
• the fossil's age compared to other fossils
• the fossil's age based on radioactive decay
• what the animal ate

What is a major cause of extinction?

• biological evolution
• environmental change
• carbonization and mineralization
• a large source of food

A jackrabbit's powerful legs are an example of a

• structural adaptation
• functional adaptation
• behavioral adaptation
• great advantage for racing other jackrabbits

An animal migrating south for the winter is an example of a

• structural adaptation
• functional adaptation
• behavioral adaptation
• great advantage for racing other jackrabbits

According to Darwin's theory, what process causes populations to change as their environment changes?

• natural selection
• artificial selection
• selective breeding
• finding a mate

Which of the consumers typically get their energy directly from producers? - Look at the diagram

• primary consumers
• secondary consumers
• tertiary consumers
• decomposers

Many consumers get their energy from producers. Where do most producers get their energy?

• plants
• bacteria
• sunlight
• water

Which statement best describes an ecosystem?

• a community of non-interacting organisms and their physical environment
• a community of non-interacting organisms and their chemical environment
• a biological community of interacting organisms and their physical environment
• a biological community of interacting organisms and their chemical environment

Which statement best describes a biotic factor?

• any non-living component that affects the population of another organism or the environment
• any living component that affects the population of another organism or the environment
• any living component that has a population
• any living component that affects the population of another country