How did volcanoes change Earth in the first two billion years? O A. They outgassed water vapor and carbon dioxide into the
atmosphere.
O B. They caused plate movement that arranged the continents we
have today.
O C. They gradually heated the planet.
O D. They created sedimentary rock.

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

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.

Someone with these questions! pls 30 pts