Biology, 02.10.2019 04:30, sierra6816

Nitrogen-fixing cyanobacteria are critically important ecologically.

true or false?

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Biology, 22.06.2019 02:00, Bashirar19

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste. the percentage of food that the united states wastes each year is %.

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Biology, 22.06.2019 10:00, milesjreece3939

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .