the population of another type.The red squirrel population in
Britain has went down due to the introduction of the grey
MAN`S ACTIONS The activities of human beings affects
food webs, e.g. cutting down forests can affect the animal
population in these forests.
MAN`S ACTIONS The activities of humans can also affect
marine life, e.g. fish farming in Scotland has affected the
populations of sea animals.Try and find out about this.
DISASTERS Disasters like oil pollution,radiation,
industrial waste can affect food webs,
Compost heaps are used by gardeners to fertilize the soil.
They use waste products from both home and garden to do this.
3, The organic waste contains HUMUS which helps to hold water.
A food web exists inside the compost consisting of decomposers,
producers and consumers.
Decomposers break down recyclable materials.
Producers trap the sun`s energy and turn it into food.
3. Consumers feed on producers or other consumers.
The next slide shows the procedure for making compost.
The following factors affect where animals and plants will be found.
The temperature of the environment.
The humidity of the air.
The pH of the area.
The light intensity of the area.
The flow rate of the water in the area.
6. The flow rate of wind in the area.
Temperature :-the spring
Gentian is famous for its
blue flowers and grows where
the temperature is low.
Cactus plant found in Arizona .Grows to
a height of twelve feet.Stores every
available amount of water.
Humidity :- Mosses are simple plants which do not have the
ability to absorb water.They are found in damp places.