The correct answer is option d. "India was a separate continent until 45 million years ago".
Explanation:
135 million years ago, Pangea was a single continent that became separated into Laurasia in the north and Gondwana in the south. India was part of Gondwana along with Australia, South America, Antarctica and Africa. However, as a result of tectonic activity India got separated from Gondwana. This period of time at which India was a separated continent is the factor that most likely explains why animals and plants in India differ greatly from species in nearby southeast Asia. At being a separated continent, India's plants and animals go through an independent evolutionary process which made them very different an unique from nearby species.
10% energy is in the primary consumer stage. Every level you go down by 90% of the previous level. So if you start at 100% at the bottom of the pyramid, the next step is 10%, then the next step is 1% and so on
Barnard's second transplant patient Philip Blaiberg, with the operation performed at the beginning of 1968, lived for nineteen months and was able to go home from the hospital.