On which date was the noon Sun higher in the sky?

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

What is the most appropriate method of gaining weight (muscle mass)