What were most likely the first life-forms on earth?

a
simple single-celled organisms
b
simple multicellular organisms
c
complex multicellular organisms
d
complex single-celled organisms

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.

How do living things obtain phosphorus

Is this mrna or rna need need the answer in a hurry