Changes in Ecosystems

6. A squirrel makes a change to its environment when it —

• climbs a tree
• digs a hole to bury an acorn
• collects acorns
• jumps from tree to tree

Tags

NGSS.MS-LS2-4

What do scientist call organisms that are not native to an ecosystem and cause harm to native organisms?

• native plants
• invaders
• invasive species
• natural species

Which of the following activities has a positive effect on the environment?

• recycling
• deforestation
• pollution

Tags

NGSS.MS-ESS3-3

Which of the following would have a negative impact on an ecosystem

• constructing highways
• planting trees
• recycling paper

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

When a certain population becomes so dense that it harms or changes the quality of life in that environment, we have...

• a population
• overpopulation
• pollution

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Which is NOT an example of a natural environmental change?

• a beaver dam
• a hurricane
• a volcanic eruption
• a housing development

Tags

NGSS.MS-ESS3-4

When the last member of a species dies, the species becomes

• extinct
• endangered
• threatened
• dead

Tags

NGSS.MS-LS4-1

Which organism do the owl and the weasel compete for in the food web?

• Hawk
• Spider
• Grasshopper
• Shrew

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

What is a drought?

• Not enough rain
• Too much rain.
• Too much people using water
• Strong winds

Tags

NGSS.MS-ESS2-4

What would cause a decrease in the rabbit population?

• An increase in grass growing
• A decrease in caterpillars
• An increase in owls
• An increase in fox

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4