(select all that apply.) proteins may be identified separately from fats and carbohydrates by the presence of certain elements. choose the elements that qualify.

iron
sulfur
phosphorus
zinc
platinum
magnesium
nitrogen
cobalt

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes