What is the role of sunlight in an aquatic ecosystem? * it regulates oxygen absorption from the atmosphere so animals can respire O it helps to regulate water temperature so that carbon sources can be recycled O it drives photosynthesis by producers so organic compounds can be produced O it transforms phosphorus from underwater sediment so it can be used by plants

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

Explain how you will prioritize tasks in the medical office by immediate, essential, or optional. how will you re-prioritize when disruptions occur?