Ecosystems and Environments

What is the main difference between primary and secondary ecological succession?

• Primary begins WITHOUT soil; Secondary begins WITH soil

• Primary is the first state and secondary is the second stage

• Primary builds plant community; secondary builds animal community

• Primary begins WITH soil; Secondary begins WITHOUT soil

What organism starts the flow of energy in a food web or food chain?

• tertiary producer

• primary consumer

• producer

• herbivore

Tags

NGSS.MS-LS2-3

Which of the follow shows the flow of energy in a ecosystem?

• food chain

• organism path

• the sun

• producers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the follow are responsible for returning nutrients to the soil?

• scavengers

• decomposers

• producers

• carnivores

Tags

NGSS.MS-LS2-3

• a desert

• a shallow sea

• a tundra

• a rainforest

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Primary succession occurs in an area that has:

• soil

• no soil

• some soil

• none of these

___ are the first organisms to colonize an area and begin the process of ecological succession.

• foundational organisms

• introductory organisms

• primary organisms

• pioneer species

What is an example of an area that is likely to undergo primary succession?

• Glaciers melt and leave exposed rock

• Plants die from drought and decompose

• Land is bulldozed and soil remains

Tags

NGSS.MS-LS2-2

What is an example of a disturbance that could bring about secondary succession?

• Humans cut down many trees in a small region

• A volcanic eruption covers a village in lava.

The definition of ecosystem monitoring .

• a way to check the condition of an ecosystem.

• watching ecology shows

• monitoring the animals that exist in an specific quadrat.

• an animal that is used monitor the overall health of an ecosystem