Dynamic Ecosystems

Coyote populations have been increasing in recent years. Which would not be a reason for their increase?

• More food is available

• Less competition from other predators

• Less available habitat to live in.

• Less threat of being hunted by humans

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Rats were introduced to Australia and the rat population exploded over several years. Which would not be a reason for their population growing?

• Large amounts of available food

• Increase in the number of predators.

• More water available

• Large habitats to live in

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The nonliving parts of an ecosystem.

• Biotic

• Photosynthesis

• Abiotic

• Variable

Tags

NGSS.MS-LS2-3

The living things in an ecosystem.

• Biotic

• Photosynthesis

• Abiotic

• Variable

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Ecosystem disruptions may be natural catastrophic events, such as ...........

Tags

NGSS.MS-ESS3-2

If a disease strikes the snake population in the food chain shown, what will be the initial effect on the populations of hawks and rabbits?

• The populations of hawks and rabbits will decrease.

• The populations of hawks and rabbits will increase.

• The population of hawks will increase. The population of rabbits will decrease.

• The population of hawks will decrease. The population of rabbits will increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What event within the food chain might lead to the graph shown below?

• A disease in the population of rabbits.

• A disease in the population of snakes.

• A disease in the population of hawks.

• It is impossible to tell which of the above occurred.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

All of the living and non-living parts of the environment in the same area.

• Population

• Community

• Organism

• Ecosystem

Tags

NGSS.MS-LS2-3

What is the ultimate source of energy in any food chain?

• the sun

• producers

• consumers

• decomposers

Tags

NGSS.MS-LS1-6

In the stable food chain shown here, what would you expect to happen initially if you were to suddenly double the population of rabbits?

• The populations of the other three species would also increase.

• The populations of the other three species would decrease.

• The grass population would decrease. The snake population and hawk population would increase.

• The grass population and hawk population would decrease. The snake population would increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4