Before a star is born, the matter that will become the star exists as a

A bright, explosive supernova

Bred giant

C black hole

D cool, dark nebula

Using the rules of significant figures what do you get when you add 24.545 and 307.3

What are three ways to express the units for power

How do humans contribute to eutrophication in both of these cases? ● Farms: ● Lawns:

What is the mass of a rock that weights 49 newtons?

How can you tell the number of protons and nuetrons in nucleus

When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by? A. diffraction B. dispersion C. refraction D. reflection,

How long would it take to drive to alpha centauri (4.4 light-years away) ?

A type of fault where the hanging wall slides upward

How was dyslexia treated in the past and how is dyslexia treated today?

The work of Charles Kuen Kao is likely to have been most influenced by the work of which of the following scientists? A. Galileo Galilei B. Christian Doppler C. Sir Isaac Newton D. Ibn al-Haytham