Environmental Science Quarter 1 Exam Review (1.1-1.4)

It is the process of one community replacing another as a result of changing abiotic and biotic factors is called ecological succession.

• Ecological Succession

• Marine Biology

• Environmental Science

• Experiment

IT begins with no life,only bare rocks and no soil present.

• Primary succession

• Secondary Succession

• Climax Community

• Pioneer Species

It follows removal of existing biota, soil is already present. It follows after a forest fire,flooding, hurricane,etc.

• Primary Succession

• Secondary Succession

• Climax Community

• Pioneer species

It is a stable, mature community in which there is little change in the number of species.

• Primary Succession

• Secondary Succession

• Climax Community

• Pioneer Species

1. What would happen in a community that is disrupted by secondary succession event, such as a forest fire?

• A. The land will remain unchanged by this event.

• B. Soil formation will cause a change in ecosystem.

• C. A new community of vegetation will establish, that is similar to the original.

• D. A change in species of vegetation will occur, that is different from the original species

1. Which is a biotic factor that might affect the life of a water-dwelling organism?

• A. Pollutants in the water

• B. Speed of water currents

• C. Temperature of the water

• D. Bacterial population in the water

1. Which of the following abiotic factors could affect the stability of an ecosystem?

• A. droughts, floods, and heat waves

• B. hurricanes, packs of wolves, and temperature

• C. blizzards, heat waves, and swarms of grasshoppers

• D. species of fish, number of decomposers, and supply of algae

1. Which example best illustrates the relationship between an abiotic and biotic factors in an ecosystem?

• A. Salmon consuming an insect for food.

• B. Flowers providing a food source for a bee.

• C. Water currents carrying rocks downstream.

• D. Light availability determining the growth rate of plants.

1. The diagram below represents ecological succession, a process that occurs in nature.

Using the diagram provided, what would happen in this ecosystem after a secondary succession event?

• A. crabgrass and horseweed would be among the first organisms to regrow

• B. broomsedge and pine seedlings would be eliminated and unable to grow again

• C. mature pine and young deciduous trees would form first to reestablish the climax community

• D. oak and hickory trees would grow taller through mutation, allowing more biotic factors to live in the ecosystem

1. The increase of certain types of gases in the atmosphere has contributed to the problem of global warming. Which item below best describes a gas?

• A. biotic factor

• B. abiotic factor

• C. renewable factor

• D. endangered factor