PLEASE ANSWER QUICK!! Which contains the largest group of organisms, the population, community or the ecosystem?

How do antiviral drugs work? in your own words.

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

All ova contain sex chromosomes corresponding to: x y xx xy