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What is the Wetlands?
Wetlands are ecosystems where the soil is waterlogged for all or part of the year.
How much the wetlands can reduce the concentration?
Wetlands can reduce the concentration of nitrate by more than 80%.
What scientists are also concerned, by draining and drying out wetlands?
If scientist draining and drying the wetlands carbon dioxide and methane will be released into the atmosphere
Why it takes so much time destroyed the malls and parking
lots in wetlands ?
Because of human population in wetlands it takes hundred years to destroyed
What affects the development of rhododendrons?
Peat soils help rhododendrons to growing up
Which resources and materials occurring are naturally ?
soil, wood, and oil
Throughout human history , how people used their land ?
People have used their land to meet their needs
How the humans expansion into ecosystems?
Ecosystems has resulted in the destruction or fragmentation of habitats.
What going to happen if the habits are destroyed?
If habitats are destroyed they can no longer support the original species that lived there.
What isolated pockets of ecosystems affect?
Isolated pockets of ecosystems affect plant pollination, seed dispersal, and wildlife movement, and plant reproduction.
What happens when fields are left bare during non-planting season ?
Water and wind erosion can reduce the amount of healthy topsoil for plant production.
Where can we see effects of agriculture?
In many parts of North America , we can see effects of agriculture.
In which locations soils are moist and heavy?
Southwestern B.C. , soils are moist and heavy.
What are the biggest contributors to compaction on agriculture land?
Vehicles and grazing animals.
What is Aeration ?
Is one method that reduces run-off by improving the movement of air and water through soil.
How mining can effect the ecosystem?
Your Text HereMining can also effect ecosystems by contributing to ground water and surface water contamination.
What is exploitation?
Exploitation is the use or extraction of a resource until it is depleted.
How ecosystems can affected negatively?
Ecosystems can affected negatively when resources are over exploited.
How over exploitation of species effects yellow fish and tunas?
Over exploitation of species effects their numbers also in loss of genetic diversity.
What exploitation of resources can cause?
Exploitation of resources can cause habitat loss and soil degradation.
What can happen if over hunting of whales continues?
Scientist believe that over hunting of whales casued orcas to seek new prey, such as harbor seals, fur seals, sea lions, and sea otters.
How was the population in the 70s and 80s?
In the 70s, the population of harbor seals declined, which was followed in the 80s, by a decline in fur seals.
Was the food web continued to be affected throughout the 90s?
Yes, when the number of sea lions and then sea otters decreased
What happened after 90s with this kind of marine fauna?
Low numbers of sea otters resulted in an explosion of sea urchins, a primary food source for sea otters.
What the biologist say about the average rate of kelp loss?
It”s due to sea urchin grazing is as high as 45% in one day.
This author wrote, “If one man kills another,
it murder, but if a hundred thousand men kill
another hundred thousand, it is considered an
act of glory!?”
Who is Tolstoy?
(The book is
Kingdom of God)