Dynamic Ecosystems

What is an ECOSYSTEM?

• The highest number of things that can stay alive in an area.

• All living things in an ecosystem.

• An area, on land or in water, that contains living and non-living organisms which function together.

• All non-living things in an ecosystem.

• Something that limits the number of living things that can be in one ecosystem.

Identify the two BIOTIC factors from the list.

• Bacteria

• Rocks

• Sunlight

• Worms

Deserts, mountains, and rainforests are all examples of.....

• Tundras

• Ecosystems

• Biotic factors

• Population

In the food chain Carrots--->Rabbit--->Fox. The fox is a

• Producer

• First level consumer

• Second level consumer

• Decomposer

Tags

NGSS.MS-LS2-3

In the food web list all the producers.

• Fox and Owl

• Bird and mouse

• Grasshopper and rabbit

• Carrots, grasses, and grains

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?

• The horned owl population will consume more field mice.

• Horned owls will follow the field mice to a different area.

• The horned owl population will increase in the area.

• Horned owls will change to a plant-based diet.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the most likely outcome for the ecosystem?

• Biodiversity would decrease, and sustainability would decrease.

• Biodiversity would decrease, and sustainability would increase.

• Biodiversity would increase, and sustainability would increase.

• Biodiversity would increase, and sustainability would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Below is an example of a simple food chain.

Acorn → Squirrel → Fox → Mountain Lion 

What will most likely happen if squirrels are removed from the food chain?

• The fox will eat acorns

• The fox population will decrease

• The trees will produce fewer acorns.

• The mountain lion population will increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which is an abiotic factor that would affect the growth of a population within an ecosystem?

• the availability of water

• the availability of producers

• the type of herbivores present

• the number of carnivores present

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the arrow pointing at?

• carrying capacity

• biotic potential

• density-independent

• density dependent