Jessica thinks that leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color. A) This statement is an example of which part of scientific inquiry? B) Independent variable C) Dependent variable D) If the example above could be an experiment; give a possible control that could be used.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Classify this reaction: 2al+n2-> aln.

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