This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The very first stars in the universe were made of A) hydrogen and helium. B) hydrogen and helium, ... (Read 773 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

E


sheilaspns

  • Hero Member
  • *****
  • Posts: 567
Reply #2 on: Jul 27, 2018
TY


mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

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.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

A purse made from a cane toad. A purse made from a cane toad.
Some biologically important hydrogen bonds Some biologically important hydrogen bonds
People have seen patterns in the stars since ancient times.[5] This 1690 depiction of the constellat People have seen patterns in the stars since ancient times.[5] This 1690 depiction of the constellat
“To confess my weakness,” Hamilton wrote when he was only fourteen, “my ambition is prevalent.” This “To confess my weakness,” Hamilton wrote when he was only fourteen, “my ambition is prevalent.” This
Creating Trans Fatty Acids Hydrogenating, or adding hydrogen Creating Trans Fatty Acids Hydrogenating, or adding hydrogen
No payments were made on a $2,598 loan during its three-year term. What was the annually ... No payments were made on a $2,598 loan during its three-year term. What was the annually ...
Video: Glycolysis Animation

For a complete list of videos, visit our video library