Oxygen Cycle
Plants release this gas during photosynthesis.
What is oxygen?
Plants take in this gas during photosynthesis.
What is carbon dioxide?
This gas makes up most of Earth's atmosphere.
What is nitrogen?
The original source of energy for most ecosystems.
What is the Sun?
The process plants use to make food using sunlight.
What is photosynthesis?
Animals need this process to use oxygen and release energy from food.
What is cellular respiration?
This process releases carbon dioxide back into the environment.
What is cellular respiration?
Plants get nitrogen from the soil through these parts.
What are roots?
Organisms that make their own food
What are producers?
The sugar produced during photosynthesis.
What is glucose?
During photosynthesis, plants take in this gas and release oxygen.
What is carbon dioxide?
These organisms break down dead matter and return materials to the ecosystem.
What are decomposers?
When plants and animals die, these organisms break them down and return nitrogen to the soil.
What are decomposers?
Organisms that obtain energy by eating other organisms.
What are consumers?
Where does photosynthesis occur in a cell?
What is chloroplast
This group of organisms adds oxygen to the atmosphere through photosynthesis.
What are producers?
Dead plants buried for millions of years can turn into these carbon-rich energy sources.
What are fossil fuels?
These tiny living things help nitrogen change forms so plants can use it.
What are bacteria?
Energy moves through ecosystems using these diagrams.
What are food chains or food webs?
Photosynthesis stores energy, while this process releases energy.
What is cellular respiration?
Explain how oxygen moves from plants to animals.
What is: plants release oxygen during photosynthesis, and animals breathe it in for cellular respiration?
What are 3 ways Carbon gets released into the atmosphere?
respiration, decomposition, combustion
Explain one way nitrogen moves from the soil to animals.
What is: plants absorb nitrogen from soil and animals eat the plants?
What do the arrows represent?
grass ---> grasshopper ----> bird ----> snake
Energy transferred
Explain how photosynthesis and cellular respiration work together.
What is: photosynthesis makes food and oxygen, while cellular respiration uses food and oxygen to release energy and produce carbon dioxide and water?