how does the environmental changes affect communities in different ways
examples are population size or the distribution of populations
3 of 17
what are abiotic factors
temperature, the amount of water, light intensity and level of pollutants
4 of 17
what are biotic factors
competition, predation
5 of 17
how do you study the distribution of small organisms
you use a quadrat
6 of 17
how do you study the distribution along a gradient
by using a belt transect
7 of 17
what does the pyramid of biomass show
it shows how much the creatures are at each level
8 of 17
efficiency=
energy transferred to the next level/ energy available at previous level
x 100
9 of 17
how does humans affect the biodiversity
fertilisers, fish farms and a introduction of a non-indigenous species can reduce biodiversity
10 of 17
what are ways to conserve and maintain biodiversity
reforestation, conservation schemes
11 of 17
benefits of maintaining biodiversity
protecting human food supply, ensuring minimal damage to food chains, providing future medicines, cultural aspects and ecotourism
12 of 17
what is food security
it is as the population increases growing enough food for everyone decreases
13 of 17
biological factors that affect food security
increasing consumption of meat, fish, increasing animal farming, environmental changes caused by human activity, sustainability and new pest and pathogens
14 of 17
how does the carbon cycle work
carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carb
15 of 17
how does the water cycle work
Step 1: Evaporation. The water cycle begins with evaporation.
Step 2: Condensation. As water vaporizes into water vapor, it rises up in the atmosphere.
Step 3: Sublimation.
Step 4: Precipitation.
Step 5: Transpiration.
Step 6: Runoff
Step 7: Infiltration.
16 of 17
how does the nitrogen cycle work
The atmosphere contains 78% nitrogen gas. It is very unreactive and cannot be used by plants of animals. Nitrogen filtration is the process of turning N2 from the air into nitrogen- containing ions in the soil which plants can use and this happens through
17 of 17
Other cards in this set
Card 2
Front
what are organisms in a community
Back
they are interdependent
Card 3
Front
how does the environmental changes affect communities in different ways
Comments
No comments have yet been made