Chapter 3 Lesson 4
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What is the Biogeochemical Cycle?
Movement of elements through Earth’s spheres
What is the Law of Conservation of Matter?
Matter is recycled, not created or destroyed
What is Photosynthesis?
Plants make food using sunlight and CO2
What is Cellular Respiration?
Living things release CO2 while making energy
What is Nitrogen Fixation?
Conversion of nitrogen gas into a usable form for plants
What is Eutrophication?
Nutrients overload that causes algae growth.
What are Plate Tectonics?
The theory that Earth’s crustal plates move slowly over time
What is the lower mantle made out of?
Solid rock that is NOT apart of the the tectonic plates
What do convection currents do?
Causes plates to move
What are some facts about Phosphorus?
• Does not enter the atmosphere • It is a limiting nutrient for plant growth • Excess phosphorus in water causes eutrophication (algal blooms)