Once a hypothesis is rejected,
A) an observation cannot be made.
B) the experiment fails.
C) it can be revisited in future studies.
D) the scientific method has been violated.
C) it can be revisited in future studies.
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Ecological economists argue that it would be easy to find substitutes for many important ecosystem services and resources.
Answer the following statement true (T) or false (F)
Fish accounts for one-third of all harvested aquatic life measured by weight, and most of this catch is freshwater fish
Indicate whether the statement is true or false.
These are the most abundant life-forms in the sea
1.Bacteria 2.Viruses 3.Algal cells 4.Copepods
In the last few thousand years, sea-level changes have resulted from all but ________
A) submergence of land masses B) emergence of land masses C) deglaciation D) eustatic changes E) the change of the total volume of water in the Earth system