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 40 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 :)


ecabral0

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

For a complete list of videos, visit our video library