a fragment of rock from a meteorite was measured to have 1/16th of the original potassium-40 than it originally contained. Since the half life for potassium-40 is 1.277 billion years, how old is that meteorite

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons

State a hypothesis with a numerical estimate of the calories contained within a peanut based on the nutritional information on the package label combined with what you have learned in this lesson about fuel efficiency and calorimeters.

Arow of elements on the periodic table is called an