What are the products of step 1 of the hydrogen fusion process in the Sun? Check all that apply. energy helium hydrogen a neutrino a positron an electron

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

The ozone hole appears in antarctica during