This topic contains a solution. Click here to go to the answer

Author Question: The very first stars in the universe were made of A) hydrogen and helium. B) hydrogen and helium, ... (Read 768 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
The very first stars in the universe were made of
 
  A) hydrogen and helium. B) hydrogen and helium, 10 heavy elements.
  C) hydrogen and helium, 0.1 heavy elements. D) hydrogen and helium, 2 heavy elements.

Question 2

The ozone layer blocks much of the Sun's ________ radiation.
 
  A) gamma ray B) X-ray C) radio D) infrared E) ultraviolet



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Answer to Question 1

A

Answer to Question 2

E





 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

For a complete list of videos, visit our video library