How do scientists know that earth's magnetic poles have reversed many times during history

What is one sign that indicates a physical change? a) matter changes, but no new substance is formed b) a substance changes color when exposed to air. c) something catches fire and turns back d) temperature drops as two liquids are mixed together

3. One advantage to being an ectotherm is that an ectotherm

If you need to perform hand hygiene and do not have access to running water, using your personal anti-bacterial lotion is sufficient.

Why does the density increase when salt is added to water?

What is energy? A change

i need the memorize the order of the metric system but i dotn know the sentence ... im pretty sure its king henry something thats all i know can you tell me the rest

At the beginning of cellular respiration, energy is stored in the bonds of blank molecules. At the end of cellular respiration, energy is stored in the bonds of blank molecules. for each one has the options of: ATP, glucose, or oxygen

Which of the following does not contain carbon and energy iron ice cream lettuce or eggs

In what ways has poland suffered because of its lack of natural barriers

Which of the following statements is/are true? a. Loose connective tissue includes cartilage. b. Closely packed bundles of collagen fibers are characteristic of loose connective tissues. c.