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Matter Cycles

What begins the energy in all food webs and food chains? Sun
What is the source of energy in an ecosystem? Sun
What are examples of carbon in the atmosphere? Burning of fossil fuels and carbon dioxide
What is chemosynthesis? When producers use chemical energy to make their own food
What is a producer? an organism that makes its own food
What is a consumer? an organism that eats other organisms for food
People are an example of what type of energy role in a food chain? Omnivores eat plants and organisms.
What is the relationship between cellular respiration and photosynthesis? Living organisms give off carbon dioxide that is used to make food in Photosynthesis by producers. Producers give of oxygen that is used by consumers in cellular respiration.
What is the first organim consumed in a food web? producer (plant)
How do materials such as carbon, nitrogen, and water move through an ecosystem? in a cycle
How does energy move in a ecosystem? in one direction
How does a chemosynthetic organism make food? They make their own food from chemical's food in the Earth's crust.
What are the main cycles in an ecosystem? Nitrogen, water, oxygen, and carbon
These are fuels made from the fossils of decaying plants and animals that have been exposed to extreme pressure: coal, oil, and natural gas
The process that changes nitrogen in the atmosphere to usable form that plants and animals can use is: nitrogen fixation
When plants release water and water vapor back into the atmosphere from their stems and leaves? transpiration
How is nitrogen in the atmosphere changed into nitrogen compounds? Lightning
How does a plant absorb nitrogen? Bateria must change nitrogen compounds in the soil; then, it is absorbed in its roots.
How do consumers get nitrogen? Nitrogen is consumed by animals that eat plants.
How is nitrogen returned to the soil? animal waste and decaying animals
How does a cloud form? Dust particles collect water molecules and condensation occurs.
What are abiotic factors? non-livivng factors like soil, water, and climate
What are biotic factors? living organisms like plants, animals, and bacteria