In which reaction would the activation energy result in an endothermic reaction?.

1. water freezing

2. an egg cooking

3. a candle burning

4. iron rusting

Luke poles of magnets attract each other true or false

How do scientists describe the independent microorganisms (comprised of about 90% of our 100 trillion cells) in the human body?

What wavelengths of light does chlorophyll absorb best? a. 662 nm and 700 nm b. 500 nm and 600 nm c. 400 nm and 430 nm d. 430 nm and 662 nm

What is the gravitational force between you and Earth?

Which statement about chargaff rules is correct

What was the result of the human genome project?

During periods of extreme stress a client may experience elevated blood pressure, dilated pupils, and increased respirations. these unconscious responses originate in which part of the brain?

It takes about 8 minutes 20 seconds for light (or radio waves) to travel from the sun to Earth. In the future, when there is a human colony orbiting Saturn, about how long will it take you to send a message from Earth to that colony? A. 71.25 s B.

How does King Hamlet die? A. His wine glass is poisoned. B. He is thrown off a bridge. C. He is bitten by a snake. D. Poison is poured in his ear.

A group of people? A:perspectives B:insituitions C:commuinty D:circumstances