Why do you think it's important for scientists to study Earth's past climates? What information
are scientists likely to gain from investigating the
Earth's past? Since the data obtained by
paleoclimatologists is not based on direct
observations, can their discoveries and models
be trusted? Why or why not?

How can you approximate the number of calories required to keep you in energy balance?

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.

Ture or false evidence for evolution includes millions of fossils