Fusion reaction power the blank in space. humans currently use fusion in blank, but erases hers are seeking more applications
1st blank (asteroids, planets, sun and the stars)
2nd blank (electric power plants, steel production, weapons)

The air exhaled from the lungs of a smoker has a concentration of 24 ppm co. express the concentration as a percent.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added