Which of the following best explains why ecosystems need a continual influx of new energy?

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

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?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?