Presentation on theme: "Biogeochemical Cycles How do nutrients cycle through the environment?"— Presentation transcript:
Biogeochemical Cycles How do nutrients cycle through the environment?
Matter Is any material that has mass and occupies space. Is never used up and never goes away. – It cycles round and round. The Law of Conservation of Matter is a principle that states that matter may be transformed from one type of matter to another, but it can’t be created or destroyed.
NUTRIENT CYCLING Nutrients cycle through the environment endlessly
Nutrient Cycling Question: What do you know about nutrition and nutrients?
Nutrient Cycling Nutrients are matter that organisms require for their life processes. Two types – Macronutrients which are required in large amounts and include nitrogen, carbon, and phosphorus. – Micronutrients which are required in small amounts.
Nutrient Cycling Endlessly circulate through the environment in biogeochemical cycles. Carbon, oxygen, phosphorus, nitrogen are nutrients that cycle through all of Earth’s spheres and organisms.
NITROGEN CYCLE The nitrogen cycle relies on bacteria that make nitrogen useful to organisms and bacteria that can return it to the atmosphere.
Nitrogen Cycle Nitrogen – Makes up 78% of the atmosphere and is the sixth most abundant element. – Is an essential Ingredient of DNA & RNA (proteins) that build organisms. Nutrient for plant growth – This means that the nitrogen cycle is vital to all organisms.
Nitrogen Cycle Nitrogen gas cannot cycle out of the atmosphere and into organisms. – The nitrogen cycle chemically changes nitrogen gas to make nitrogen available to organisms that need it.
Nitrogen Cycle Nitrogen fixation converts nitrogen gas into ammonia – This accomplished by Intense energy of lightning. Nitrogen-fixing bacteria – Live in soil or associated with soybean, clover, and legumes. – Use the process of nitrification to produce nitrate ions (NO 3 - ) that plants can use.
Nitrogen Cycle Denitrification bacteria complete the nitrogen cycle by converting nitrates in soil or water back to nitrogen gas.