The half-life of silicon-32 is 710 years. if 70 grams is present now, how much will be present in 200 years? (round your answer to three decimal places.)

Which level of consumer had access to the smallest apply of energy

Variety of living organisms; includes genetic, species, and ecological types.

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.