What is the name for the following polyatomic ion? PO4-3
A) phosphate
B) phosphorus oxide
C) phosphinate
D) trioxo phosphoride
E) potassium
A
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Soils that are most likely to be compacted have
A) high porosity. B) high permeability. C) low porosity. D) low permeability.
The bottom of the euphotic zone is where
1.there’s no more light at all, unmeasurable.
2.there’s insufficient light for any photosynthesis to occur.
3.use of carbohydrates in respiration equals their photosynthetic production.
4.phytoplankton respiration is zero.
What makes light absorption in diatoms more effective than just using chlorophyll?
A) Surface-to-volume B) Microbial loop C) Frustule perforations D) Accessory pigments
Haiti has presented the most serious threat to U.S. foreign policy interests in the Caribbean since the 1950s
Indicate whether the statement is true or false