What is the main difference between osmosis and diffusion? In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration. What is the difference between osmosis and osmotic?…

When did people start using animals for testing? The history of animal testing goes back to the writings of the Ancient Greeks in the 4th and 3rd centuries BCE, with Aristotle (384–322 BCE) and Erasistratus (304–258 BCE) one of the first documented to perform experiments on nonhuman animals. How does animal testing benefit humans? Animal…

What was the weirdest thing ever? 15 fascinating things on Earth you had no idea existed Vantablack is the darkest known substance in the universe. The blue angel sea slug looks like an alien. Aerogel looks like a slice of cloud. Rainbow eucalyptus trees have candy-colored bark. There’s an underground cathedral in Colombia entirely made…

Why is it called patient? Patient comes from the Latin “patiens,” from “patior,” to suffer or bear. The patient, in this language, is truly passive—bearing whatever suffering is necessary and tolerating patiently the interventions of the outside expert. What do you call your patients? If you are unsure of what to call patients, you are…