Helping Brazil The tropical rainforests of South America, Africa, Asia and the north
of Australia are all distributed evenly between the Tropic of Cancer
and the Tropic of Capricorn. The Equator run through some of these
rainforests and is also close to some of them. The map below
illustrates all the rainforests in the world. The tropical rainforests
of the world are all global ecosystems. An ecosystem is the link
between plants and animals and the habitats in which they live in, so
this is why we call tropical rainforests ecosystems because they link
the animal life with the plant life. Another word for global
ecosystems is biomes.
Map illustrating the biomes of the world
An example of a biome that I will be referring to is the Amazon
rainforest. This tropical rainforest is one of the largest tropical
rainforest in the world and is home to 10 per cent of all known plant
and animal species. To describe the rainforest in briefer terms, we
can say that it is a type of system’; it has four main parts, which
classify it as a system. The rainforest has an Input - material or
energy moving into the system. An Output - material or energy leaving
the system. Stores - places where material or energy is kept and Flows
- movement of materials or energy between the stores. All these four
parts are vital to the system and if one part of the system is taken
away, then the whole system will fail to proceed and will stop.
There are many natural chains and cycles, which take place in all
rainforests, such as, the food chain, the nutrient cycle, the water
cycle etc. The food chain is a natural chain, which is ongoing to keep
organisms healthy and alive. There are countless numbers of food
chains, which go on and keep organisms in the world alive. This is how
a typical food chain looks like:
Herbivore Carnivore Omnivore
The Producers are living things that take the non-living matter from
the environment, such as minerals and gases and uses them to support
life. Example of a Producer is grass. The Herbivores are animals that
eat plants, they are considered as consumers and are second in the
food chain. An example of a Herbivore is the grasshopper. The
Carnivores are animals that eat other animals, they are also
considered as consumers. An example of a Carnivore is a snake.
Omnivores are animals that eat both animals and plants; they are also
consumers of the ecosystem. An example of an Omnivore is a human.
Lastly, Decomposers are living things, which feed off dead plants
and animals and reduce their remains to minerals and gases again. An
example of a Decomposer is Bacteria.