A

Which of these best defines the abiotic and biotic parts of an ecosystem?

• Abiotic factors are living parts of an ecosystem. Biotic factors are living parts of an ecosystem

• Abiotic factors are nonliving parts of an ecosystem. Biotic factors are living parts of an ecosystem.

• Abiotic are living parts of an ecosystem. Biotic factors are living parts of an ecosystem.

• Abiotic are nonliving parts of an ecosystem. Biotic factors are nonliving parts of an ecosystem.

A polar bear interacts with abiotic factors in its environment in all of the following ways EXCEPT by —

• sliding across the ice.

• swimming in the cool waters.

• eating fish that it catches.

• blending into the snow to hide.

In this environment, the brown bears by the river are —

• biotic factors that catch biotic salmon in the abiotic river.

• biotic factors that absorb the biotic sunlight.

• abiotic factors that hunt along the biotic river.

• abiotic factors that breathe the abiotic air.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Please choose a defense that explains the biotic and abiotic parts of an ecosystem in which organisms interact.

• Bobby says zooplankton are abiotic because they are on the bottom of the food web.

• Barbara says zooplankton are biotic because they are made of cells.

• Jimmy says that they are abiotic because all biotic organisms have to be animals.

• Joseph says that they are biotic because he knows that all things in the ocean are biotic.

Tags

NGSS.MS-LS2-2

The picture below shows a group of wild rabbits or the same species living together. Which level of organization does this group of rabbits best represent?

• a community

• an organism

• a population

• an ecosystem

Which of these correctly orders the levels of biological organization from lowest to highest?

• biosphere → population → community → individual → ecosystem → biome

• community → population → biosphere → individual → biome → ecosystem

• individual→ population → community → ecosystem → biome → biosphere

• biome → population → community → biosphere → ecosystem → individual

Which diagram correctly illustrates the levels of organization within an ecosystem?

• 
• 
• 
• 

Analyze the image below showing a group of biotic tropical fish interacting with a biotic tube sponge. Which level of organization does the interaction of the biotic tropical fish with the biotic tube sponge best represent?

• An ecosystem

• A community

• An organism

• A population

Tags

NGSS.MS-LS2-2

-located near the equator

-warm all year long

-receives lots of rainfall.

-many species of trees and plants

These characteristics best describe what major biome?

• Desert

• Grassland

• Rainforest

• Tundra

The picture below shows a school aquarium, and aquatic microhabitat. The aquarium has fish, live plants, a rocky bottom, and a light source. There is no oxygen pump. Which of the following is a way that the microhabitat supports the organisms that live in it?

• it has rocks for the fish to eat for energy.

• it has several layers of thick soil for fish to create burrows

• it has a light source for the plants to make their own food through photosynthesis

• it has glass that makes it easier for students to observe the microhabitat

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3