Which of these is most likely a step in the formation of soil? a. erosion of soil b. crystallization of rocks c. animals digging rocks d. solidification of organic matter

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

If anyone who can me with this hw? i would really appreciate it