Science worksheets for Kindergarten
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Photosynthesizing plants affect the carbon cycle by...
Creating more carbon atoms
Reducing the amount of carbon in the soil
Absorbing CO2 from the atmosphere, lowering atmospheric levels of carbon
None of the above; plants do not affect the carbon cycle
The burning of fossil fuels contributes to the carbon cycle in what way?
Increases the amount of CO2 in the atmosphere
Increases the amount of O2 in the atmosphere
Decreases the amount of CO2 in the atmosphere
Decreases the amount of O2 in the atmosphere
Nitrogen is part what important molecule(s)?
DNA
Proteins
Lipids
ATP
Which type of organism performs nitrogen fixation?
Bacteria
Viruses
Humans
Plants and phytoplankton
Plants obtain nitrogen through photosynthesis.
True
False
Examples of decomposers include:
humans, dogs, and whales
trees, tomato plants, and phytoplankton
viruses
fungi, worms, and bacteria
Which of these is NOT a part of the Nitrogen Cycle?
nitrification
photosynthesis
denitrification
fixation
Deforestation affects the Carbon Cycle by...
Reducing the amount of CO2 that can be removed from the air by plants
Increasing the amount of CO2 that can be removed from the air by plants
Increasing the rate of photosynthesis that can be done by plant plants
Decreasing the biodiversity of land plants
Which of these is the first stage of the Nitrogen Cycle?
denitrification
fixation
ammonification
assimilation
All living things can use nitrogen gas from the atmosphere.
True
False
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