compared to land the open oceans are
a nutrient rich environment
b contain unlimited nitrogen
c are nutrient poor environment
d are rich in silca and iron
how is carbon stored in the biosphere
a in the atmosphere as carbon dioxide
b underground as fossil fuels and calcium carbonate rock
c in the oceans as dissolved carbon dioxide
d all of the above
which of the following has a direct role in the nitrogen cycle
a bacteria
b legumes
c decomposer
d all of the above
biochemical cycles ensures that
a human activity will have no effect on element, chemical compounds
b living organism will not become limited in any one nutrient
c nutrients will be circulated throughout the biosphere
d many nutrients will not reach toxic concentrations in the biosphere
which of the following would not be a limiting factor related to population density
a a struggle for food, water, space or sunlight
b predator/prey relationships
c the eruption of the volcano
d parasitism and disease
a nutrient rich environment
b contain unlimited nitrogen
c are nutrient poor environment
d are rich in silca and iron
how is carbon stored in the biosphere
a in the atmosphere as carbon dioxide
b underground as fossil fuels and calcium carbonate rock
c in the oceans as dissolved carbon dioxide
d all of the above
which of the following has a direct role in the nitrogen cycle
a bacteria
b legumes
c decomposer
d all of the above
biochemical cycles ensures that
a human activity will have no effect on element, chemical compounds
b living organism will not become limited in any one nutrient
c nutrients will be circulated throughout the biosphere
d many nutrients will not reach toxic concentrations in the biosphere
which of the following would not be a limiting factor related to population density
a a struggle for food, water, space or sunlight
b predator/prey relationships
c the eruption of the volcano
d parasitism and disease