What is the net change that occurs during the fusion process in the sun?

I believe it is b, Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

i'd say that the moon rock is about 2.2 billion years old.