Science- Nutrient cycles (carbon)

quiz on mon, Nov 10

What are nutrients

elements needed to make food, proteins, cells, etc

4 main nutrients for life on earth?

carbon, hydrogen, oxygen and nitrogen

chemical formula for glucose (sugar)

C6H12O6

What is photosynthesis

reaction used by plants to make sugar.

what is the reactants and products of photosynthesis

carbon dioxide + water + light energy = glucose + oxygen

what is cellular respiration

process of cells breaking down glucose into energy

word equation for cellular respiration

glucose + oxygen = carbon dioxide + water + usable energy 

carbon storage

• atmosphere

• oceans

• earth

• earth’s crust

what is co2 and what do we use it for

it is a gas in the atmosphere, we need it because it’s needed in photosynthesis to make food and oxygen. it also helps trap heat in the earth’s atmosphere to keep it warm

how is co2 formed?

• volcanic activity

• human activities (burning fossil fuels)

• cellular respiration

• decomposition of dead organisms