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

Author Question: The middle era of the geological history of Mars is called the A) Noachian B) Hesperian C) ... (Read 67 times)

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
The middle era of the geological history of Mars is called the
 
  A) Noachian
  B) Hesperian
  C) Amazonian
  D) Phanerozonian

Question 2

Why might we think that silicon would be an obvious alternative to carbon as a building block for biological molecules?
 
  A) it forms the basis of some life forms on Earth
  B) it has a similar abundance on Earth to carbon
  C) it forms complex molecules like carbon
  D) it has a similar electronic structure to carbon, forming a maximum of four bonds and, hence, should have a similar chemistry


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

D


soccerdreamer_17

  • Member
  • Posts: 552
Reply 2 on: Jul 27, 2018
Excellent

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Some male birds and mammals congregate in communal courting grounds called leks. Some male birds and mammals congregate in communal courting grounds called leks.
Animals of Hindustan monkeys called bandar that can be taught to do tricks Animals of Hindustan monkeys called bandar that can be taught to do tricks
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
Nursing history for musculoskeletal assessment Nursing history for musculoskeletal assessment
The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce
Harvard Alumni Study show who are more physically active in middle adulthood Harvard Alumni Study show who are more physically active in middle adulthood
Video: Glycolysis - and oxygen

For a complete list of videos, visit our video library