Most of the world's population O is migratory
O lives in cities
lives in rural areas
O lives in suburbs

In the diagram below dab and dac are adjacent angles

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.

Suppose that the sun shrank in size but that its mass remained the same. what would happen to the orbit of the earth?