Answer:
the last answer seems to be correct
Explanation:
I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)
All carbohydrates, including sugar, therefore contain the same three elements:carbon<span>, </span>hydrogen<span> and </span>oxygen<span>.</span>
So, The Phosphorus Cycle is pretty much what is describing the movement of Phosphorus through the Lithosphere, Hydrosphere, and Biosphere.
Answer:
Major threats to freshwater fishes and other freshwater biodiversity, include: habitat modification, fragmentation, and destruction; invasive species; overfishing; environmental pollution; forestry practise; and climate change.
