Scientist have found evidence that in the past there may have been liquid water on the surface of planet earth why would a scientist be interested in this information?

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical