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Author Question: A phenomenon that occurs in the ionosphere is a. the greenhouse effect. b. photosynthesis. c. ... (Read 57 times)

bcretired

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on: Jul 28, 2018
A phenomenon that occurs in the ionosphere is
 a. the greenhouse effect.
  b. photosynthesis.
  c. Rayleigh scattering.
  d. auroras.

Question 2

The average mass of the atoms of an element in naturally occurring samples is called the ______________ mass of the element.
 a. atomic
  b. average
  c. relative
  d. molecular


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k.lashomb

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

a


bcretired

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Reply 2 on: Jul 28, 2018
Gracias!

debra928

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Reply 3 on: Yesterday
Excellent

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