What type of energy does a spinning turbine have?
a. electrical energy
b. nuclear energy
c. thermal energy
d. mechanical energy

(D) spinning turbine has mechanical energy. If an object's kinetic energy is added to the object's potential energy, the total is the object's mechanical 

Option (D)

Explanation:

The turbines are commonly used in order to produce electrical energy. Due to the continuous motion of a fluid (liquid), there contains a certain amount of potential as well as kinetic energy. These turbines when starts spinning at a much faster rate, it eventually converts these P.E and K.E into mechanical energy. This means that the turbines are now comprised of mechanical energy.

These turbines also lead to the rotation of the shafts that are linked to a generator and this results in the conversion of stored mechanical energy into electrical energy.

Thus, the spinning turbines are comprised of mechanical energy.

Hence, the correct answer is option (D).

the correct answer is - c) the ecosystem would be unable to recover after any event.

if in a certain ecosystem, lot of new species of plants and animals are introduced, and those plants and animals can survive in those conditions, than the ecosystem will experience dramatic changes and would never be the same again.

the new species, which will practically be invasive species, will start to compete with the native ones, and very often the invasive species come as tougher. the ecosystem will start to rapidly change, the native species will have much more competition and their numbers will dwindle, and in no time the whole ecosystem will be unrecognizable.