Topic 7 Environmetal Changes And The Water Cycle And The Carbon Cycle Flashcards
What does a change distribution mean
Changes in the environment
Examples of changes
Availability of water
temperature
atmospheric gases
How did the distribution of organisms change with availability water
Distribution of some animals and plant species in the tropics change between wet and dry season when there is more or less rainfall so more or less water available
How much the distribution of organisms change with the temperature
The distribution of bird species in Germany is changing because of the rise in average temperatures
How does a change in the composition of atmospheric gases affect the distribution of an organism
The distribution of some species changes in areas where there is more air pollution
some species of lichen can’t grow in areas where sulphur dioxide is given out by certain industrial processes
What can environmental changes be caused by
Seasonal factors
geographic factors
human interaction
Water cycle
Energy from the Sun makes water evaporate turn into water vapour
Water also evaporates from plants known as transpiration
Warm water vapour is carried upwards when it gets high enough it cools and condenses to form clouds
Water falls from clouds is precipitation onto land where it provides fresh water the plants and animals
Then drains into the sea for the whole process to start again
What do plants take in the passed up the food chain
Take in carbon, oxygen, hydrogen and nitrogen from the soil in the air in complex compounds
When are the materials return to the environment as waste products
When organisms die or decay
When do materials decay
When they’re broken down by microorganisms
What conditions help decay happen faster
Warm, moist, aerobic (oxygen rich) conditions because microorganisms are more active in these conditions
What does decay put Back into the soil
The stuff plants need to grow e.g. mineral ions back into the soil
What happens in a stable community
The materials taken out the soil and used by the plants or balance by those that are put back in
Carbon cycle
Look at paper
What is CO2 removed from the atmosphere by
Green plants and algae during photosynthesis
carbon is made into glucose which can be turned into carbohydrates fats and proteins that make up the bodies of plants and algae
What happens when plants and algae respire
Some carbon is returned to the atmosphere as CO2
What happens to the carbon when plants and algae are eaten by animals
The carbon moves through the food chain
What happens when animals respire
Some carbon his return to the atmosphere as CO2
When plants algae and animals die and other animals (detritus feeders) and What else feed on there remains
Micro organisms when these organisms respire CO2 is returned into the atmosphere
What is animals waste also broken down by
Detritus feeders And microorganisms
What does the combustion of warden fossil fuels release into the atmosphere
CO2
What is carbon energy constantly being cycle from
The air through food chains and eventually back into the air again
