Is the earth clean ... ?

A. hell no!

B. YES

C. I dont know.

Which transition by an electron will release the greatest amount of energy? hurry!

A team of scientist is studying and earthquake

A standing wave form is 10 m long between the first and sixth nodes. The wavelength is: 0.4 m 0.6 m 1.4 m 4.0 m

The gradual reduction of the amplitude

Which sentence from the article supports the idea that the visible spectrum is more limited in marine animals than humans? A Most bioluminescent organisms are found in the ocean, including bioluminescent fish, bacteria and jellies.

If an electrically neutral atom has 4 protons and 4 neutrons and it gains 2 neutrons what is its electrical charge

Which of these types of organisms is there more of on Earth? A. goat B. human C. dandelion D. bacterium

Light traveling through the air strikes the surface of the four materials below. Which material reflects light but does not refract it? A) Diamond B) Water Droplets C) Prism D) Metal Spoon

A yoyo is hanging motionless from a string. Identify and describe the forces exerted on the string.

What do stars begin as