Chapter 20 review

Assuming that each trophic level uses 90% if the first trophic level receives 100 units of energy, how much energy is available for the second trophic level?

• 1 unit

• 10 units

• 100 units

• 1,000 units

Tags

NGSS.MS-LS2-3

The gases that surround the Earth are called.

• The core

• Respiration

• The atmosphere

• Humus

What role does bacteria play in soil ecosystems?

• Add air to the soil

• Break down rocks

• Return nutrients to soil

• Tunnel through the soil

Tags

NGSS.MS-LS2-3

Which of these organisms is the first step in a food chain?

• Producers

• Mammals

• Consumers

• Predators

Tags

NGSS.MS-LS1-6

Which is the process where producers use carbon dioxide, water, and light to make sugars?

• Calvin cycle

• Energy conversion

• Chemosynthesis

• Photosynthesis

Tags

NGSS.MS-LS1-6

Which of the following is part of the nitrogen cycle?

• Nitrogen is removed from soil by animal waste

• Nitrogen is absorbed by plants when they die

• Nitrogen compounds fall to the ground when it rains

• Nitrogen is produced by plants as a byproduct of photosynthesis

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the source of almost all energy on Earth?

• Sun

• Water

• Soil

• Nitrogen

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What process is shown in this figure?

• Photosynthesis

• Transpiration

• Nitrogen fixation

• Decay

Tags

NGSS.MS-LS1-6

What process is shown in this figure?

• Transpiration

• Photosynthesis

• Nitrogen Fixation

• Decomposing

Tags

NGSS.MS-LS1-6

What process is shown in this figure?

• Transpiration

• Photosynthesis

• Nitrogen fixation

• Decomposing

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3