Which of the following is considered a physical environmental hazard?

A. Fire

B. Lead in water

C. Smoking cigarettes

D. Being attacked in a dark alley

When electrons in an atom in an excited state fall to lower energy levels, energy is?

Always been observed to be true, law or theory?

Does the following statement describe a function of DNA, a function of RNA, a function of both DNA and RNA, or a function of neither DNA nor RNA?

A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. a. What is the time tTO needed to take off? b.

What is the frequency of a light wave with a wavelength of 620nm

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9

Which describes nuclear fusion? The nuclei of two atoms combine to form a larger nucleus. The nucleus of one atom splits to form two smaller nuclei. The electrons of two atoms combine to form a cluster of electrons.

In a class debate, a student argues that the big bang theory is "just a theory." What is most likely to be this student's understanding of scientific theories? A. Theories agree with observations of nature. B. Theories are just guesses. C.

Look at the advertisement. A poster that reads, "There's more to resistors than resistance. If you're really serious about cost, be serious about quality." with tools. Which persuasive media technique is used in this advertisement

If you were told an atom was an ion, you would know the atom must have a