Which statement describes an effect that humans have on the geosphere when they build a dam? Ice may form on the lake.
Plants may grow on the dam.
Rocks and minerals are used to build the dam.
Water from the lake may evaporate into the air.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

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