Environmental Issues

When a species becomes extinct ____________.

•  there is a chance the species will come back eventually
• the species adapts to a new situation
•  it completely destroys the ecosystem
• no young of that species can be produced

Tags

NGSS.MS-LS2-4

What could be happening if a macroinvertebrate no longer lives in a stream?

• The water quality is improving.
• The water quality is unchanged.
• The water quality is decreasing.
• There is no connection between water quality and macroinvertebrates.

Tags

NGSS.MS-LS2-4

In the 21st century, extinction is a big problem because _____________________ 

• the rate of extinction is much faster than ever before
• there is no such thing as extinction in the 21st century
• now we can record when it happens
• the rate of extinction is much slower than ever before

Tags

NGSS.MS-LS4-1

What happens when an ecosystem becomes less biodiverse?

• The health of the ecosystem increases.
• The health of the ecosystem decreases.
• The health of the ecosystem remains the same.
• The ecosystem cannot survive.

Tags

NGSS.MS-LS2-5

What is the relationship between temperature and dissolved oxygen?

• Cold water holds less dissolved oxygen.
• Cold water holds more dissolved oxygen.
• Warm water holds more dissolved oxygen.
• There is no relationship between temperature and dissolved oxygen.

Animal waste runoff is an example of which of the following? 

• point source pollution
• nonpoint source pollution
• widespread air pollution
• widespread hazardous waste pollution

Different organisms have different roles within a habitat. The role an organism plays in its habitat is its __________________.

• population
• community
• ecosystem
• niche

What is it called when a scientist can determine the exact place that is the source of a pollutant?

• point source pollution
• non-point source pollution
• widespread pollution
•  less hazardous pollution

What is a wetland?

• all of the land area surrounding a river system
• the area at a river's mouth where fresh water meets salt water
• a low-lying area that is saturated with water
•  an area on the side of a river that floods periodically

Tags

NGSS.MS-LS2-3

 The term applied to a species that has no living members is _______________.

• endangered
• threatened
• extinct
• troubled

Tags

NGSS.MS-LS4-1