Answer:
D
Explanation:
I don't really understand but Hope's this helps
They can either be protons (positive) or electrons (negative)
The sun
The sun produces our hear
Answer:
The sugar molecules thus formed contain carbon, hydrogen, and oxygen: Their hydrocarbon backbones are wont to make amino acids and other carbon-based molecules which will be assembled into larger molecules (such as proteins or DNA), used for instance to make new cells.
Explanation:
Eutrophication is the input of excessive nutrients into fresh surface waters. Nutrients can cause algal blooms. Some of these algae can be toxic, and algal death can also result in anoxic conditions, leading to fish deaths. Some indicators of eutrophic conditions can be high measures of important nutrients such as phosphates and nitrates. Another indication of eutrophication can be high concentrations of algal cells. Finally, low dissolved oxygen can indicate eutrophic conditions.
