The answer is 300nm x 18nm
They use Geothermal Energy, which is used from plants to generate electricity.
The answer is D since organism x has a n optimal temperature of 37 degrees Celsius and when organisms y enzyme gets incorporated with enzyme x it will increase enzyme’s x temperature therefore enzyme x will denature meaning it will unfold and it will loose its properties hence loosing its activity because its temperature has been altered.
Ecosystems disturbed by a nature will be eventually restored unless it's a really big cataclysm, but most of the ecosystems are now a human caused disturbance. For example there are plenty of species which are already extinct or nearly extinct because of hunting industry.
