Answer : Low;High
You use high power for a more detailed view on what you are looking at and you use the low power for a general view.
Answer:
upside down
Explanation:
When images first appear into the eye, they are first flipped. They are flipped over when it is being processed by the brain.
Answer;
A) island forms and mainland forms descended from common ancestors.
Explanation;
-Islands tend to host very distinct but limited sets or species; on a given island a spectacular collection of one related group of species would be present and thriving, but many entire families or even higher taxa would be completely absent.
-All the species on the islands and the nearest continent are closely related to one another, however, each species had a set of adaptations that suits it for a particular environment. This means that the island forms and mainland forms descended from common ancestors.
Oxygen is non metal meaning they are negative