Biomass

Ecology

plants

Primary production

Chemical oceanography

Productivity

Photosynthesis

Respiration

energy

Ecosystem ecology

Ecosystem Energetics Laws of Thermodynamics 1st ? Energy can neither be created nor destroyed, only transformed from one type to the other All energy in an ecosystem ultimately comes from the sun 2nd ? In any transfer of energy, energy is lost. Energy is constantly being lost to the environment as heat Primary Productivity Primary Productivity is the production of organic compounds from atmospheric or aquatic CO2, principally through the process of photosynthesis Plants use the product of photosynthesis in 2 ways 1. Plant structures such as proteins, cells, tissues (building the plant body) 2. Fuel for Respiration. This powers such processes as growth, transpiration, reproduction, etc. Gross primary productivity (GPP) ? total amount of energy from photosynthesis

CH 54 Bio Notes

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Ecology

Primary production

Ecological efficiency

Primary productivity aka BIOMASS B/c some ecosystems are better at converting solar energy then others, we calc PP to indicate how efficient a partic ecosys is @ convert solar energy *Expressed as a Biomass/Rate-- The dry mass of vegetation produced per unit time (g/m2/yr) Aka BIOMASS The amt of light energy converted to chemical energy in a given amt of time Gross (Total) Primary Productivity (GPP) Not all of all the chemical energy produced is available to be passed on to primary consumers Autotrophs (primary producers) use some of energy themselves for cellular respiration Total primary productivity of an autroph Total amt of energy fixed by plants Net primary productivity (NPP) [GPP] ? [Energy Used by Autotrophs] = [NPP] Expressed as biomass per square meter/yr

Part 2 Biology Revision Notes for AQA GCSE A/A*

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Fuels

Biogas

Glucose

homeostasis

Carbon dioxide

health

B3.3 Keeping internal conditions constant 3.1 Controlling internal condition Keeping the conditions in the in the body within a narrow range is called homeostasis. Temperature, blood glucose, water and ion content and levels of waste products must all be controlled Waste products that have to be removed include; CO2 (produced by respiration) removed by the lungs urea (produced in the liver when amino acids are broken down) removed by the kidneys and temporarily stored in the bladder Water and ions enter the body when we eat and drink. If the water or ion content in the body is wrong, too much water may move into or out of the cells. This could damage or destroy the cells 3.2 The human kidney

ch 10 APWH study aid notes

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World History

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maize

Industrial agriculture

Biotechnology

Ch 10 Study Aid Notes. Extensive Agriculture Requires limited labor inputs or is spread across large areas of land or both. Staple Crop A crop that is produced in large to feed whole civilizations and societies. Mixed Farming Multiple crops and animals existing on a single farm to provide diverse nutritional intake and non-food items. General Farming Another name for mixed farming. Food Preservation Drying, pickling, storing, refrigerating, and cooking food. Specialized Crops sprout out from this idea. Plantation Crops. Plantation Crops Countries Banana Brazil, Dominica, Costa Rica, Honduras Cane Sugar US (Florida), Brazil, Cuba, China Coffee Ethiopia, Kenya, Colombia, Brazil, US Tea Sri Lanka, India, China, Thailand Rubber

Biomass Powerpoint

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Environmental Science

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Biogas

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environmental science biomass powerpoint how does it work

Biogas

Biomass ? Organic Matter One of our oldest energy sources. Gets energy from the sun-photosynthesis Renewable Three types are used today Wood and agriculture products Solid Waste Landfill gas and biogas What is it? ? How Does it Work? ? Mainly used for Electricity - 14% Heat- 1/10th of homes Fuels - 15% Industrial - 55% What Does it Do? ? Can be sustainable Paper and saw mills But? Like anything can be overused Cost How Realistic is it? ? Promising Comes from many different sources Usually our waste Can be used for a lot Has a few disadvantages Releases carbon dioxide Future? ? What is the purpose that biomass is used for the most? Where does biomass get its energy from? Is biomass better environmentally and economically than coal? How?

Cp 3 Ecosystems

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Environmental Science

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Ecology

State functions

Philosophy of biology

Ecological pyramid

Energy

Ecological efficiency

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Carbon

Climate change mitigation

Carbon dioxide in Earth's atmosphere