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A system Answer A group of different parts that work together as a whole Inputs Answer Energy or matter that enters a system Output Answer The thing produced at the end of a system Storage Answer Where energy or matter is accumulated inside a system Flow Answer Movement of energy matter within a system Boundaries Answer outside/edge of a system Synergy Answer the power that results from the combination of two or more forces Open system Answer A system in which both matter an...

Demographics Answer the study of the dynamics of population change Exponential curve- Answer when populations follow an accelerating rate of growth which is proportional to the population size Crude Birth Rate (CBR) Answer number of births per thousand individuals in a population per year Crude Death Rate (CDR) Answer number of deaths per thousand individuals in a population per year calculate CDR and CBR Answer dividing the amount of deaths or births by the population, and then mult...

system Answer An entity with at least two components (parts) that are linked and interact in some way. open system Answer Allow energy or matter to enter or leave the boundaries of the system. A clear example is the human body. closed system Answer allow energy to enter or leave but matter is contained within the boundaries. The Earth is an imperfect example of this. ( Some matter does enter the atmosphere, such as meteorites, or leaves, such as astronauts). isolated system Answer do no...

IB ESS - Topic 5 (Soil & Terrestrial Food Production Systems) Full Notes. Soil is a complex ecosystem made up of minerals, organic material, gases and liquids which forms the for many animals and plants. ● all the food that we consume depends on soil. ● holds water & mineral nutrients that plants depend upon. ● plants grow in soil and we eat plants that grow directly in the soil or animals that have eaten● habitat for many organisms in some ecosystems, below-ground biomass > above-...

Biotic factors Answer the living organisms in an ecosystem abiotic factors Answer the non-living factors in an ecosystem trophic level Answer the position an organism occupies in a food chain as a result of its feeding habits food chain Answer a simple linear relationship which shows how energy is transferred between organisms as each consumes an organism from a lower trophic level food web Answer a group of interconnected food chains biomass Answer the mass of organic material in...

IB ESS - Topic 5 (Soil & Terrestrial Food Production Systems) Full Notes. The soil system may be illustrated by a soil profile that has a layered structure (horizons). 2. Soil system storages include organic matter, organisms, nutrients, minerals, air and water. 3. Transfers of material within the soil, including biological mixing and leaching (minerals dissolved water moving through soil), contribute to the organization of the soil. 4. There are inputs of organic material including leaf litt...

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