The Cycles of Matter (Instruction)

Identify the importance of carbon. Check all that apply. -It ensures life on Earth can exist. -It is the universal solvent. -It is a part of all organic compounds, including carbohydrates and nucleic acids. -It is found in every living thing.

-It ensures life on Earth can exist. -It is a part of all organic compounds, including carbohydrates and nucleic acids. -It is found in every living thing.

Identify the importance of water. Check all that apply. -It ensures life on Earth can exist. -It is a part of all organic compounds. -It is used by plants for photosynthesis. -It is the main component of many biological components, including blood.

-It ensures life on Earth can exist. -It is used by plants for photosynthesis. -It is the main component of many biological components, including blood.

Check all of the items that are cycled through the biosphere in biogeochemical cycles.

All of the above

The nitrogen cycle could not exist without ________________

Bacteria

Identify the cycle described. ______________________ Plants take in this nutrient when they perform photosynthesis. An animal eats the plant and uses its carbohydrates for energy. The animal releases the nutrient back into the atmosphere during respiration.

Carbon Cycle

Fill in the blanks below with the correct word to complete the sentence. Water is warmed by the sun and ____________ It is then cooled and ________ Finally, it is brought back to Earth in the form of ____________

Evaporated Condenses Precipitation

Identify the nutrient described. __________________________ 78% of Earth's atmosphere contains this nutrient in the form of gas. All living things require this nutrient to make proteins, and it is found in the waste products of many living things. ___________________________This nutrient is not abundant, but it is essential to life. It is part of DNA and RNA and a component of bones and cell membranes.

Nitrogen Phosphorus

Identify the cycle described. __________________________ Bacteria in the soil converts this nutrient into a usable form. Plant take up the usable nutrient through the soil and assimilate it into proteins, making it part of the plant. An animal eats the plants, and the nutrient becomes part of the animal. When the animal dies, it decomposes, returning the nutrient back to the soil.

Nitrogen Cycle

Identify the cycle described. ___________________________________ This nutrient is cycled between living things and the soil. Plants absorb this nutrient from the soil and turn it into organic compounds through assimilation. Animals eats the plants and pass the nutrient through the food chain from one organism to another. When the animal dies, it decomposes and returns the nutrient back to the soil. The nutrient can also enter the soil through weathering and erosion.

Phosphorus Cycle

Water and nutrients that are not cycled are stored in a __________________

Reservoir

Phosphorus cycles between living things and the ________________

Soil

Identify the steps of the phosphorus cycle described. Step 1 has been identified for you. Step 1: Plants absorb phosphates in the soil and turn them into organic compounds through assimilation. _________________ Animals eat these plants and pass the phosphorus through the food chain. _________________ An animal dies and decays, returning the phosphorus to the soil, and the cycle repeats.

Step 2 Step 3

Put the steps of the carbon cycle in order using Step 1 as your starting point. Step 1: Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form. ___________________ The animal dies and decomposes, returning nitrogen back to the soil. ___________________ Once nitrogen is in usable form, it is taken up by plants and assimilated into proteins ___________________ An animal eats a plant and the nitrogen becomes part of the animal's proteins.

Step 4 Step 2 Step 3

Put the steps of the carbon cycle in order using Step 1 as your starting point. Step 1: Carbon dioxide is taken in by plants during photosynthesis. _______________ The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is taken in. ________________The animal releases the carbon dioxide back into the atmosphere during respiration. _________________The animal eats a plant and uses its carbohydrates for energy.

Step four Step three Step two