41. After WWI, the most important colonial powers in sub-Saharan Africa were a. the USA and Russia
b. France and Germany
c. France and Russia
d. France and Great Britain

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

Describe how ocean currents can affect a moving object ❕❕❕

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?