Ecosystem Unit: LS2-4, LS2-5

As succession progresses, animal species diversity increases due to the fact that

• less soil is being created

• precipitation rates stabilize

• food chains increase

• temperatures moderate

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

The process of ecosystems changing over time

• ecological succession

• climax community

• primary species

• pioneer species

Species diversity hurts ecological succession

• true

• false

Tags

NGSS.MS-LS2-5

What is the order of succession shown in the figure?

• ABCD

• CDAB

• BADC

• DABC

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Maintaining __ is important to keep an ecosystem healthy.

• pollutants

• sunlight

• biodiversity

• interactions

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

__ species are important to ecosystems and many ecosystems would collapse without them

• keystone

• wild

• extinct

• living

Tags

NGSS.MS-LS2-2

__ are protected lands in the United States that preserve ecosystems and biodiversity

• farms

• oceans

• national parks

• great lakes

Tags

NGSS.MS-LS2-5

Evaluate the following possible solutions to combat the threats to biodiversity shown in the image. Which of the following would be the LEAST effective solution.

• regulating fishing

• proper disposal of waste

• reducing the use of harmful chemicals

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A polar ecosystem is known to have low health compared to an ecosystem in the tropical rain forest. What does this mean in terms of biodiversity?

• polar ecosystems are never considered healthy

• polar ecosystems naturally have less biodiversity than tropical rain forest ecosystems

• tropical rain forest ecosystems are always considered healthy

• polar ecosystems have no biodiversity

Tags

NGSS.MS-LS2-5

Which is not true.

• everything in ecosystems are interconnected

• high biodiversity leads to faster recovery time in healthy ecosystems

• ecosystem health is determined by disturbance recovery time

• biodiversity and ecosystem health are not connected

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5