Scientific Processes and Ecology Review!

a broad scientific idea that well-tested and is supported by a large amount of evidence is called a scientific __________.

• hypothesis

• experiment

• theory

• observation

A student thinks that drinking energy drinks before a quiz will help students have higher scores. What would the independent variable be in this experiment?

• the energy drinks

• the students' quiz scores

• the students

What is the dependent variable in an experiment?

• what is being tested

• things that are kept the same in all groups

• what is being measured

• the hypothesis

A student thinks that plants will grow taller when given fertilizer solution instead of water. Based on the diagram, which group would be the control group?

• Group A

• Group B

• Neither group

A student thinks that plants will grow taller when given fertilizer solution instead of water. Based on the diagram, what would be the dependent variable?

• the amount of water and solution used on each plant

• the fertilizer solution

• the height of each plant

The picture above shows _________________, where soil is still intact after a disturbance (a fire) and the ecosystem recovers over time.

• primary succession

• secondary succession

• invasive species

• global warming

The picture shows a food chain. Which level would cause the greatest disruption to the other levels of food chain if it was removed?

• plants (producers)

• mouse (primary consumer)

• snake (secondary consumer)

• hawk (tertiary consumer)

Study the graph that show's Sweden's population. In the year 2010, what was happening to the population?

• It was growing

• It was declining

• It was stable and unchanging

• It was at its carrying capacity

Which of the following would NOT be a characteristic of an invasive species?

• Has many different types of prey or food sources

• Is very selective in the prey or food it will eat

• Has many defenses against predators

• Is able to adapt easily to environmental changes

In the energy pyramid, if the kelp has 30,000 kJ of energy, how much would energy would be available at the tertiary consumer level?

• 300,000 kJ

• 3,000 kJ

• 300 kJ

• 30 kJ