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

Author Question: What period of Earth's geologic history saw a dramatic increase in life? a. Cretaceous b. ... (Read 108 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
on: Jul 27, 2018
What period of Earth's geologic history saw a dramatic increase in life?
 
  a. Cretaceous
  b. Devonian
 c. Jurassic
 d. Tertiary
 e. Cambrian

Question 2

Which describes the direct change in genetic information of a cell?
 
  a. chromosome
 b. mutation
 c. evolution
 d. natural selection
  e. heredity


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaygar71

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

b


crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

elyse44

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Plnaet Earth Plnaet Earth
five realms of family life five realms of family life
Gossip and ridicule increase the status insecurity of this time of life. Gossip and ridicule increase the status insecurity of this time of life.
Hemophilia and History Hemophilia and History
Earth 65 Million Years Ago Earth 65 Million Years Ago
Video: Introduction to Autism

For a complete list of videos, visit our video library