What are three reasons we should be concerned about the current rapid extinction rate

1. Possibility of all life being wiped out

2. Ecosystem being imbalanced.

3. Loss of one species triggers the lost of others as the food chain will collapse.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )