An hour glass pours sand at a rate of 10 grams every hour. If I measured 4 lbs of sand, how many hours did it take to pour?

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

What is the difference between how ionic and covalent bonds form