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

Author Question: Stromatolites date back to approximately A) 4.6 billion years ago B) 3.5 billion years ago C) ... (Read 116 times)

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
Stromatolites date back to approximately
 
  A) 4.6 billion years ago
  B) 3.5 billion years ago
  C) 3.85 billion years ago
  D) 4.0 billion years ago

Question 2

An up quark (u) has a charge +2/3, and a down quark (d) has a charge of -1/3. Which of the following describes a proton?
 
  A) uuu
  B) uud
  C) udd
  D) ddd


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

AmberC1996

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

B


eruditmonkey@yahoo.com

  • Member
  • Posts: 546
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

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

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Perform thumb slides on the back of hand and palm. Slide your thumb between the metacarpals on the ... Perform thumb slides on the back of hand and palm. Slide your thumb between the metacarpals on the ...
Open palmar friction moving back and forth over the lumbar and thoracic regions. Open palmar friction moving back and forth over the lumbar and thoracic regions.
Circular palmar petrissage back up the spine from buttocks to shoulders. Tissues lift as hands trace ... Circular palmar petrissage back up the spine from buttocks to shoulders. Tissues lift as hands trace ...
Prevalence of lifetime mood disorders for Canadian men and women age 55 years and over Prevalence of lifetime mood disorders for Canadian men and women age 55 years and over
Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take
Tracing numbers and alphabets by nat 3 years old Tracing numbers and alphabets by nat 3 years old
Video: Introduction to Genetics

For a complete list of videos, visit our video library