Contrast the physical features of the high and low islands of the Pacific. Why would geographers separate the Pacific Islands into these two categories?

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .

In russia which of these challenges affects the transportation of both petroleum products and other goods?