What was the total mission population in 1777? In 1790?

Ateam of scientists studied the sediment at the bottom of an ancient lake. they were able to determine the weather conditions of the indus valley in ancient times. they found that the entire area had suffered a drought after the monsoons declined. this drought lasted 200 years. because of the drought, there wasn’t enough food or water. the people of the indus valley were forced to leave their cities.

Rachel carson 1962 silent spring was a groundbreaking work regarding what topic

The decision to annex hawaii was a controversial one