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

Author Question: Evidence for very recent water erosion on Mars comes from the observations of A) dark streaks on ... (Read 71 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
Evidence for very recent water erosion on Mars comes from the observations of
 
  A) dark streaks on crater walls
  B) channels carved on the slopes of volcanoes
  C) dried up river beds on the highlands
  D) mud flows surrounding craters

Question 2

Before the decoupling
 
  A) the Universe was transparent to radiation.
  B) the Universe was opaque to radiation.
  C) protons and electrons combined to form atoms.
  D) there was more helium than hydrogen.
  E) deuterium produced electrons and positrons.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ddddd

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

A

Answer to Question 2

B




future617RT

  • Member
  • Posts: 543
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


sailorcrescent

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

For a complete list of videos, visit our video library