by 1800 the world population was 1 billion people civilizations existed for thousands of years prior to 1800 based on your knowledge of world history why do you supposed to take the world population to reach a billion by 1800

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

Mention any one function of transparency international?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand