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 121 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?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Inventory of the Universe Inventory of the Universe
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
Possible Geometries of the Universe Possible Geometries of the Universe
Diego Rivera, Man, Controller of the Universe. Diego Rivera, Man, Controller of the Universe.
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: Calvin Cycle Explained!

For a complete list of videos, visit our video library