A "control group" is used in an experiment to

How are DNA and RNA different

Which of the following best describes diffusion? * A) movement of water molecules across a selectively permeable membrane B) Movement of molecules from an area of higher concentration to lower concentration C) Movement of materials across a cell

Which of the following is not a major in science? Physical science Life science Social science Basic science

A 24-year-old mother who is a smoker and cocaine addict gave birth at 39 weeks to a 2,000-gram female infant who is in the neonatal intensive care unit.

Why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern day cyanobacteria populated the earth

Describe Coriolis effect and explain why it affects ocean currents.

If the original cell has 46 chromosomes how can each daughter cell also have 46 chromosomes

In what order does water transition from ocean water to rain water?

Where did pompeii worms get their names from

When you scratch a mosquito bite, you damage some cells. Damaged cells release histamine, which causes localized swelling. The swelling can crush cells, causing them to release more histamine. This is an example of