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08.10.2021 •
Biology
Hazards to humans that come into contact with it,
4. Study the graphs in the stimulus. Order the events that occurred at the Bodega Bay study
site, where scientists used traps to catch and count samples of marine organisms, from
1to 5. Write a 1 by the first event to occur and a 5 by the last event.
5 The number of native clams per sample falls from 100 to 10.
1 Scientists find European Green Crabs in Bodega Bay.
4 Scientists find that the number of native clams per sample has risen to 40.
3 The number of native shore crabs per sample falls from 25 to 20.
2 The number of European Green Crabs per sample falls from 5 to 4.
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Ответ:
Ответ:
It is estimated that around 2/3 (72%) of the Earth's surface is covered by water, in which the aquatic ecosystems are present. The aquatic ecosystem supports almost 1/3rd of the primary productivity.
The lands are present in 28% of the earth surface, but the number of producers present on the land accounts for almost 2/3rd of the total primary productivity. Hence, it can be said that the terrestrial ecosystems have more productivity than the aquatic ones.