неотложный GCSE Biology Ecology

What does abiotic mean

• ◉some food passed out in faeces ◉large amounts of glucose used in respiration ◉some material lost in excretion
• Non-living things
• ◉stretch a transect line (kinda like long tape) across the area ◉place a quadrat at regular intervals ◉count plants in the quadrat each time ◉compare the results
• secrete enzymes which party digest waste,then take up small soluble food molecules

What does biotic mean

• living organisms
• availability of water,temperature,atmospheric gases
• as the trophic level increase the no. of organisms decreases as they need more energy and have less available.
• Fish farms, and planted forests

What are abiotic factors

• a limit on how may fish you can catch
• Place where an organism lives in the ecosystem
• Physical (non living) conditions that affect organism distribution (population and habitat)
• secrete enzymes which party digest waste,then take up small soluble food molecules

What are the abiotic factors?

• usually a green plant produces the molecules (usually glucose through photosynthesis), eaten by primary consumers
• Place where an organism lives in the ecosystem
• Temp, Light intensity , Oxygen levels for plants and animals in water, Co2 levels for plants, Moisture (water), Soil pH, mineral contents (plants),Wind intensity and direction.
• protein rich,low fat,high fibre, vege

Define ecosystem

• Interaction of a community (of living organisms) with abiotic parts of their environment.
• secrete enzymes which party digest waste,then take up small soluble food molecules
• how fresh water circulates between living organisms rivers and the sea
• reduce energy transfer from animals to environment: restrict/limit movement of animals, control temp of surrounding(less excretion?) also they can be fed high protein foods to increase growth.

Give an example of an artificial ecosystem

• Fish farms, and planted forests
• releases CO2 into atmosphere
• a limit on how may fish you can catch
• bacteria living in deep sea vents

Define biodiversity

• Total number of organisms in an area
• Range of different plants and organisms in an ecosystem
• Place where an organism lives in the ecosystem
• increased birth rate, changing diets, new pests and pathogens (screws with farms), change in weather e.g. drought=famine, cost of farm supplies like fertiliser going up, conflict in parts of world

What do decomposers do

• ◉stretch a transect line (kinda like long tape) across the area ◉place a quadrat at regular intervals ◉count plants in the quadrat each time ◉compare the results
• fungus grown on glucose syrup. in aerobic conditions then harvested and purified.
• Break down dead organisms
• A community where the biotic and abiotic factors are in balance with that the population sizes remain fairly constant.

Define population

• Total number of species in an ecosystem
• provided more food or food with better nutritional value
• features
• protein rich,low fat,high fibre, vege

Define habitat

• Place where an organism lives in the ecosystem
• 1%
• a limit on how may fish you can catch
• features