Why are there no dinosaurs fossils found in florida

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

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

Select the word from the list that best fits the definition of branch of islam that is in iran