Changing Ecosystems

A dam was built on the Colorado river and blocked the migration of fish. The fish population will likely...

• Stay the same

• Decrease

• Increase

• Increase then decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A new road was built to run through the Back Bay nature preserve. This is an example of what type of change to the ecosystem?

• chemical

• biological

• physical

• mechanical

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

which is a population?

• The coyotes in the Back Bay

• All the organisms in Costa Mesa

• A single squirrel

• All organisms on earth

Tags

NGSS.MS-LS4-4

As you remove resources from an ecosystem, what happens to the population of an organism?

• It increases

• It stays the same

• It increases then decreases

• It decreases

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which word means "not living or composed of living things"?

• abiotic

• impact

• ecosystem

• species

Tags

NGSS.MS-LS2-3

Which word means " a system made up of an ecological community of living things interacting with their environment especially under natural conditions"?

• ecosystem

• beneficial

• detrimental

• organism

Tags

NGSS.MS-LS2-3

Which word means "harmful or bad"?

• detrimental

• organism

• population

• climate

Which word means "moving from one region or habitat to another, especially regularly according to the seasons"?

• migration

• abiotic

• impact

• ecosystem

What are the two main parts of an ecosystem?

• Animals and plants
• Biotic & abiotic
• Habitat and rocks
• living and non living things

Tags

NGSS.MS-LS2-3

_______ is when contanimants are brought into an enviornment and causes a negative change. (fill in blank.)

• Recourse extraction

• Nonnative Species

• Pollution