Which of the following is a characteristic of a good index fossil?
a. the fossil closely resembles many other types of fossils.

b. the organism was restricted to only one location on earth.

c. the organism lived only during a short part of earth's history.

The answer is c, because we use it as an "index" to tell when the animal lived, so if it's unique to that time level in the ground we know it lived that long ago.

Ithink its solid. hope this

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy