Cycling of Matter

If the producer has 100,000 kcal, how many energy levels can this energy pyramid support?

• 4

• 5

• 6

• 7

Tags

NGSS.MS-LS2-3

Which TWO describe the role of producers and consumers in the oxygen and nitrogen cycle

• Producers breathe in carbon dioxide and breath out Oxygen

• Producers breathe in Oxygen and breathe out Carbon Dioxide

• Consumers breathe in Carbon Dioxide and breathe out Oxygen

• Consumers breathe in Oxygen and breathe out Carbon Dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organism has the most amount of energy?

• Eagle

• Grass

• Snail

• Rabbit

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the role on decomposers?

• Eat plants

• Break down dead animals and material

• Produce their own food

• Eat every animal under it

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Students designed an experiment to model the carbon cycle. The students combined water & carbon dioxide-producing disks in a sealed flask. The flask represented earth's atmosphere, and the lamp represented the sun.

Which component can be added to the flask to reduce the concentration of carbon dioxide in the model atmosphere created by the discs?

• Bacteria to use carbon during nitrification.

• Plants to absorb carbon in the process of photosynthesis.

• Snails to use carbon through cellular respiration.

• Mushrooms to absorb carbon during decomposition.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does the carbon cycle support the Law of Conservation of Mass?

• The total amount of carbon decreases, as it moves through the carbon cycle.

• The total amount of carbon does not change as it moves through the carbon cycle.

• The total amount of carbon gradually increases, as it moves through the carbon cycle.

• The total amount of carbon changes depending on where it's located in the carbon cycle.

Tags

SC.8.L.18.4

How do animals obtain nitrogen stored in plants?

• Denitrifying bacteria

• Nitrogen fixing bacteria

• Directly from the atmosphere

• They eat the plants

Tags

NGSS.MS-LS2-3

Label the diagram of the carbon cycle

f

g

h

e

d

c

b

a

Atmospheric carbon dioxide

combustion

feeding

photosynthesis

fossilization (fossil fuels)

CO₂ dissolved in water

decomposition

cellular respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

As part of the nitrogen cycle, animals acquire some amino acids by doing which of the following?

• Breathing air

• Eating plants

• Drinking water

• Producing waste

_______________________ converts nitrogen into a form that plants can absorb.

• Denitrifying bacteria

• Nitrogen fixing bacteria

• Decomposers

Tags

NGSS.MS-LS2-3