Primary
Primary- Start from scratch (ice)
Primary is the gradual growth of an ecosystem over a long period of time. Many years ago there practically wasn't any water in the arctic. But some glaciers melted and pretty soon it became what we know and see it as, freshwater. Then when the freshwater mixed with the salt water if the ocean, it was polluted.
Primary is the gradual growth of an ecosystem over a long period of time. Many years ago there practically wasn't any water in the arctic. But some glaciers melted and pretty soon it became what we know and see it as, freshwater. Then when the freshwater mixed with the salt water if the ocean, it was polluted.
Secondary
Secondary- Gradual building of an ecosystem that startedas freshwater.
In this image the top picture shows the lake is full of fresh water and lots of fish. The vegetation has not exceeded its limit of growth. Then years later, in the second picture the lake gets smaller and has fewer fish swimming in it. There are less fish and a lot more grass in place of where the water use to be. You can tell this is Secondary because on the last picture,the lake is completely dried out and there are no more fish as the grass has gown over where the lake use to be. In those many years the vegetation has grown in the picture. As the lake got smaller the vegetation grew over where the lake once was located. This is the process of secondary succession.
In this image the top picture shows the lake is full of fresh water and lots of fish. The vegetation has not exceeded its limit of growth. Then years later, in the second picture the lake gets smaller and has fewer fish swimming in it. There are less fish and a lot more grass in place of where the water use to be. You can tell this is Secondary because on the last picture,the lake is completely dried out and there are no more fish as the grass has gown over where the lake use to be. In those many years the vegetation has grown in the picture. As the lake got smaller the vegetation grew over where the lake once was located. This is the process of secondary succession.
Human Impact
The human impact for freshwater is that people can pollute by throwing trash into the water ways. Humans also can control the population by fishing and other forms of freshwater hunting. Also, some producers dump the excess waste into water to forget about it. People have a very powerful control over freshwater for these reasons.
Biogeochemical Cycle
This image is connected to freshwater because the water from the sea, lake or pond is evaporated in the clouds. When it rains on the forest it either goes into the soil or runs back down to the ocean and then the process starts all over again and just keeps going. That is what the picture below shows it it is The Water Cycle of Freshwater.
Prediction
The prediction we have made for freshwater is that in 50,000 years it will be 2% of the world's water. Right now in the Earth freshwater is at 3% but because of what is happening to the ocean from humans it will probably go to 2%. That is our prediction for freshwater.