« previous next »

Author Question: There have been at least how many mass extinctions over the course of 570 million years? a. 15 ... (Read 75 times)

tiara099

  • Hero Member
  • *****
  • Posts: 588
on: Jul 10, 2018
There have been at least how many mass extinctions over the course of 570 million years?
 
  a. 15
  b. 2
  c. 7
  d. 20
  e. 12

Question 2

According to biologist Stephen Palumbi (2001), humans are the world's
 
  a. greatest creation.
  b. weakest evolutionary force.
  c. greatest evolutionary force.
  d. greatest devolutionary force.
  e. greatest threat.


bdobbins

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 10, 2018
Answer to Question 1

a

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

tiara099

  • Hero Member
  • *****
  • Posts: 588
Reply #2 on: Jul 10, 2018
Correct answers!


bdobbins

  • Sr. Member
  • ****
  • Posts: 326
Reply #3 on: Jul 10, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

(a) The site of Zhoukoudian outside of Beijing, China, spans several hundred thousand years and (b) (a) The site of Zhoukoudian outside of Beijing, China, spans several hundred thousand years and (b)
Polar ice caps lose mass as surface ice melts Polar ice caps lose mass as surface ice melts
Population age 65 and over and age 85 and over, selected years 1900-2008 and projected 2010-2050. Population age 65 and over and age 85 and over, selected years 1900-2008 and projected 2010-2050.
Gravitational Force Due to a Distribution of Mass problem 2 Gravitational Force Due to a Distribution of Mass problem 2
Three years old drawing Three years old drawing
Video: Deglutition

For a complete list of videos, visit our video library