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

Author Question: How long ago did multicellular life forms appear in the fossil record? A) 4.5 billion years ago ... (Read 72 times)

yoroshambo

  • Hero Member
  • *****
  • Posts: 566
on: Jul 27, 2018
How long ago did multicellular life forms appear in the fossil record?
 
  A) 4.5 billion years ago
  B) 3.8 billion years ago
  C) one billion years ago
  D) 63 million years ago
  E) 30 million years ago

Question 2

Relate Herbig-Haro objects to the T-Tauri Wind.
 
  What will be an ideal response?


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

C

Answer to Question 2

In stage 5, the spinning protostar forms a dusty disk, but ejects material at high speeds along the bi-polar jets perpendicular to this disk. The shock wave from these high speed jets lights up the Herbig-Haro objects along a line over a light-year long in some cases.


yoroshambo

  • Hero Member
  • *****
  • Posts: 566
Reply #2 on: Jul 27, 2018
Thank you!


djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Discipline-specific training can take years to perfect. Discipline-specific training can take years to perfect.
DNA Forms with a Primer DNA Forms with a Primer
Nursing Student life Nursing Student life
Review of Health and Illness over the Adult Years Review of Health and Illness over the Adult Years
Equipment Inventory Record Equipment Inventory Record
Cells are the basic units of life Cells are the basic units of life
Video: SNP Polymorphysim Microarray Chip - How to Test a Person's DNA

For a complete list of videos, visit our video library