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Author Question: Define and explain the meaning of DENSITY. What will be an ideal ... (Read 68 times)

kaid0807

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on: Jul 27, 2018
Define and explain the meaning of DENSITY.
 
  What will be an ideal response?

Question 2

What is one reason that early life formed cells?
 
  A) cell walls prevent heat from escaping
  B) cells concentrate molecules together so they react more easily
  C) only cells can replicate
  D) biological reactions can occur only within cells


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sokh

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Reply #1 on: Jul 27, 2018
Answer to Question 1

Density expresses how much mass is contained in a unit volume:
i.e., Density = Mass/Volume

Answer to Question 2

B


kaid0807

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

steff9894

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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