Cycles and Human Impacts

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Tags

NGSS.MS-ESS3-2

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Why is the ocean important to the carbon cycle?

• It keeps sediment containing carbon underwater for millions of years
• The ocean gives out more carbon then it takes in (increases global warming)
• The ocean isn't important to the carbon cycle.

Tags

NGSS.HS-ESS2-6

If the animal population decreased, the amount of carbon would _____.

• Stay the same
• Increase
• Decrease

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

If the plant population decreased, the amount of carbon would ______.

• Stay the same
• Increase
• Decrease

Tags

NGSS.HS-LS2-5

During respiration, carbon moves from ________ to ________.

• plant;animal
• plant;sky
• animal;sky
• sky;animal

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

During photosynthesis, carbon moves from______ to _______.

• plant;sky
• sky;plant
• animal;sky
• animal;plant

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How nitrogen is "fixed" into useable form for plants...

• through action of bacteria only
• through lightning only
• through action of bacteria & lightning
• through photosynthesis

Tags

NGSS.MS-LS2-3

What is an example of a legume?

• strawberries
• carrots
• peanuts
• corn

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition
• ammonia 
• nitrogen fixation
• denitrification

Tags

NGSS.HS-PS1-2