Some farmers near an ocean must irrigate their soybean crops to harvest any successful growth. Desperate and without a source of fresh water, one of them decides to irrigate his field with seawater.
Another farmer captures rain in special traps and lightly irrigates his crops. What would we expect to be the results of these different forms of irrigation? A) The seawater irrigation plants produce many beans while the light irrigation produces few beans.
B) The seawater irrigation kills the plants while the light irrigation produces few beans.
C) Both forms of irrigation produce good crops with moderate production of beans.
D) The seawater crops last longer than the fresh water crops, but only the seawater crops produce beans.
Question 2
What percentage of the Earth is covered by oceans?
A) 50
B) 17
C) 80
D) 71
Measures of ocean chlorophyll-a concentrations from part of Atlantic Canada in (a) January 2006, and
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