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 770 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?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Hertzsprung-Russell diagram for a set of stars that includes the Sun Hertzsprung-Russell diagram for a set of stars that includes the Sun
Classifying the Spectra of Stars Classifying the Spectra of Stars
Stars and the Interstellar Medium Stars and the Interstellar Medium
Emanuel Leutze’s Washington Crossing the Delaware (1851) is riddled with historical inaccuracies, mo Emanuel Leutze’s Washington Crossing the Delaware (1851) is riddled with historical inaccuracies, mo
Food: Made Over Made Better Food: Made Over Made Better
How many grams of CO2 can be made from reacting 78.1 g of O2 and 62.4 g of C4H10?2 C4H10 + 13 ... How many grams of CO2 can be made from reacting 78.1 g of O2 and 62.4 g of C4H10?2 C4H10 + 13 ...
Video: Nervous pathway to the Neuromuscular (NMJ)

For a complete list of videos, visit our video library