https://briangrimmerblog.wordpress.com/tag/biosphere/
https://www.quora.com/What-is-the-difference-between-a-biome-and-an-ecosystem
|
Ecology is the scientific study of interactions among organisms and between organisms and their environment, or surroundings.
Biosphere contains the combined portions of theplanet in which all of life exists, including land, water, and air, or atmosphere. Species is a group of organisms so similar to one another that they can breed and produce fertile offspring. Populations, or groups of individuals that belong to same species and live in the same area. Communities, or assemblages of different populations that live together in a defined area. Ecosystem is a collection of all the organisms that live in a particular place, together with their nonliving, or physical, environment. Biomes is a group of ecosystems that have the same climate and similar dominatn communities. Scientists conduct modern ecological research using three basic approaches: observing, experimenting, and modeling. |
Sunlight is the main energy source for life on Earth.
Some types of organisms rely on the energy stored in inorganic chemical compounds. Autotrouphs are plants, some algae and certain bacteria can capture sunlight energy or chemicals energy and use that to produce food. Photosynthesis is a process that autotrophs use light energy to power chemical reactions that convert CO2 and H2O into O2 and energy rich carbohydrates ( sugar and starch). Chemosynthesis is a process when organisms use chemical energy to produce carbonhydrates. Heterotrophs ( also called consumers) are organisms that rely on other organisms for their energy and food supply. Herbivores obtain energy by eating only plants. ( Cows, deers, caterpillars,..) Carnivores obtain energy by eating animals ( Lions, snakes, dogs,...) Omnivores obtain energy by eating both plants and animals. ( Humans, bears, crows, ...) Detritivores are feed on plant and enimal remains and other dead matter. ( Mites, earthworms, snails...) Decomposers breaks down organic matter. ( Bacteria and fungi) Food chain is a series of steps in which organisms transfer energy by eating and being eaten. When the feeding relationships among the various organisms in an ecosystem form a network of complex interactions, ecologists describe these relationships as a food web. Trophic is each step in a food chain or food web Ecological pyramid is a diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or a food web Only about 10% of the energy avaliable within one trophic level is transferred to organisms at the next trophic level. Biomass is the total amount of living tissue within a given trophic level |
http://sciencewithme.com/learn-about-photo-synthesis/
http://www.mstworkbooks.co.za/natural-sciences/gr8/gr8-ll-02.html
|
http://water.usgs.gov/edu/watercycleevapotranspiration.html
http://www.slideshare.net/kanju888/enhancing-biological-nitrogen-fixation-in-pulse-crops-under-drought-condition
|
Unlike the one-way flow of energy, matter is recycle within and between ecosystems.
Evaporation is a process by with water changes from liquid to an atmospheric gas Transpiration is the process of water enter the atmosphere by evaporating from the leaves of plants. Nutrients is all the chemical substances that an organism needs to sustain life. Every living organism needs nutrients to build tissues and carry out essential life functions. Legumes is such bacteria, which live in the soil and on the roots of plants Nitrogen fixation is a process that legumes convert nitrogen gas into ammonia. Denitrification is the process which other soil bacteria convert nitrates into nitrogen gas. Primary productivity is the rate atwhich organic matter is created by producers. One factor that controls the primary productivity of an ecosystem is the amount of available nutrients. Limiting nutrient is a substance when an ecosystem is limiting by a single nutrient that is scarce or cycles very slowly. Algal bloom is the result of when an aquatic ecosystem receives a large input of a limiting nutrient. |