An iron skillet has a mass of 500 g. The specific heat of iron is 0.5 J/g.°C. How much heat must be absorbed to raise the skillet's temperature
by 100°C?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which process of living things produces water that enters the water cycle