Tuesday, September 18, 2007
Me and sophie are doing task card eight, the topic of this card is trophic levels.
A trophic level is levels are the feeding position in a food chain such as primary producers, herbivore, primary carnivore, etc. Green plants form the first trophic level the producers. Herbivores form the second trophic level while carnivores form the third and even the fourth trophic levels. This is a food chain for a lion.
What is a trophic level?
A 'trophic level' is the name given to the different categorizations that the animals in a certain pyramid are given. Such as producers, first, second and third order consumers. Each thing is one trophic level, ie. 'producers' are the first trophic level in the pyramid.
Ecosystem earth
hey everone, will and i have task card seven which is obviously Ecosystem earth.
We are exploring what biotic and abiotic factors are.
abiotic factors are non living physical and chemical factors in the environment. Some of these factors are water, natural gases, light, wind and minerals cloud cover, rain, snow, hurricanes, etc.
Biotic factors are living organisms. These factors are Plants, animals, fungi, protist and bacteria are all biotic or living factors
Hope you read this deep and meaningful because you will not get a better definition of these words. Chow
Hey everyone!!
Tierney and i have task card five.
This requires us to find a clear definition of a decomposer with an appropriate diagram and an example. Natural ecosystems can be described as self-sustaining. Our card also requires us to research about what this means. Along with this we also have to research about the importance of decomposers in a food web. We also have to find if an ecosystem can be self sustaining without a decompser. To finish off we have to complete a flow of matter diagram for the marine food chain in the placed on our card.
Caragh
Ecosystem(habitat and envirment)
hi everyone here is the Ecosystem(habitat and envirment)
Jack and sam
plants need light, water air and soil
A habitat is more than just a home. It's the environment that supplies everything that living things need to survive.
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert (very dry, either hot or cold) would have a difficult time living in the tropical rain forest (warm and very wet).
koala is my favourite animal. Koalas live in societies, just like humans, so they need to be able to come into contact with other koalas. It is because of this they need to have areas of suitable eucalypt forest which are large enough to support a healthy koala population and to allow for expansion by maturing young koalas.These are very important trees.
Koala populations only occur if suitable habitat is available and because Koala's are very fussy eaters and have strong preferences for different types of gumleaves, then the most important factor which make habitats suitable are the presence of tree species preferred by koalas (usually eucalypts, but also some non-eucalypts) growing in particular associations on suitable soils with adequate rainfall.
Research has shown that socially stable koala populations occur only when there are favourite tree species present. Different species of eucalypts grow in different parts of Australia, so a koala in Victoria would have a very different diet from one in Queensland. Koalas like a change, too, and sometimes they will eat from other trees such as wattle or tea tree.
Each koala eats approximately 200 to 500 grams of leaves per day. The teeth are adapted to deal with for this. The sharp front incisors nip the leaves from the branches and the molars(back teeth) are shaped to allow the koala to cut and shear the leaves rather than just crush them.
plants need light, water air and soil
A habitat is more than just a home. It's the environment that supplies everything that living things need to survive.
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert (very dry, either hot or cold) would have a difficult time living in the tropical rain forest (warm and very wet).
koala is my favourite animal. Koalas live in societies, just like humans, so they need to be able to come into contact with other koalas. It is because of this they need to have areas of suitable eucalypt forest which are large enough to support a healthy koala population and to allow for expansion by maturing young koalas.These are very important trees.
Koala populations only occur if suitable habitat is available and because Koala's are very fussy eaters and have strong preferences for different types of gumleaves, then the most important factor which make habitats suitable are the presence of tree species preferred by koalas (usually eucalypts, but also some non-eucalypts) growing in particular associations on suitable soils with adequate rainfall.
Research has shown that socially stable koala populations occur only when there are favourite tree species present. Different species of eucalypts grow in different parts of Australia, so a koala in Victoria would have a very different diet from one in Queensland. Koalas like a change, too, and sometimes they will eat from other trees such as wattle or tea tree.
Each koala eats approximately 200 to 500 grams of leaves per day. The teeth are adapted to deal with for this. The sharp front incisors nip the leaves from the branches and the molars(back teeth) are shaped to allow the koala to cut and shear the leaves rather than just crush them.
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