CRM 1.3 Biomes

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

Tags

NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-4

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.

Tags

NGSS.MS-LS2-3

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

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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