Agriculture Review

(a)   is a crop.

• sheep
• eggs
• cattle
• lettuce

Tags

NGSS.MS-LS1-6

During which process in the carbon cycle do the crops grown on farms capture carbon and turn it into food?

• decay

• cellular respiration

• photosynthesis

• combustion

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What benefit does agriculture provide to humans?

• Agriculture produces most of the food that humans eat.

• Farm machinery produces greenhouse gases that contribute to climate change.

• Farms use land that was once occupied by unwanted forests.

• Farming practices cause local waterways to become polluted with fertilizer runoff.

What term describes the farming practice of planting large areas with the same crop?

• runoff

• nitrogen cycle

• food processing

• monoculture

Analyze the diagram of the nitrogen cycle below. Which part of the model represents nitrogen fixation?

• A. 1

• B. 2

• C. 3

Tags

NGSS.MS-LS2-3

Match each statement to the stage of the nitrogen cycle it describes.

• Dead organisms are broken down.

• uptake

• Plants absorb nitrate through roots.

• nitrogen fixation

• Nitrogen gas is converted into nitrate.

• decomposition

Why do commercial fertilizers contain nitrate instead of pure nitrogen?

• Nitrate is less expensive to produce than pure nitrogen.

• Pure nitrogen is a poison to living things.

• Nitrate is the form of nitrogen that plants can use.

• Pure nitrogen is a pollutant in the atmosphere.

Tags

NGSS.MS-LS2-1

A bag of fertilizer contains the numbers 15 - 10 - 5 on the label. (a)   percent of the fertilizer is nitrogen.

• 5%
• 10%
• 15%

How do fertilizers affect the nitrogen cycle in ecosystems?

• Nitrate from crops causes the population of decomposers to get too large.

• Fertilizers prevent plants from creating protein.

• Excess nitrate enters waterways causing algal blooms.

• Fertilizers remove too much nitrogen gas from the atmosphere.

Tags

NGSS.MS-LS2-3

Examine the model of the modern food supply chain below. Which part of the diagram represents an area where food is kept before it is sold to stores?

• 1

• 2

• 3

• 4