« previous next »

Author Question: Which of the following is true of life on Earth? A) Life, in the form of multicellular organisms, ... (Read 130 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
Which of the following is true of life on Earth?
 
  A) Life, in the form of multicellular organisms, has existed on Earth for only about 2 million years.
  B) Life has existed on Earth for at least 3.4 billion years.
  C) The Cambrian explosion marks the formation of the first unicellular organisms on Earth.
  D) Complex multicellular organisms were present on Earth 2.5 billion years ago.

Question 2

Offspring born with random alterations to their DNA are called__________.
 
  A) clones
  B) drones
  C) mutants
  D) fossils


djpooyouma

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

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Dispersing and sedentary stages of organisms. Dispersing and sedentary stages of organisms.
Grime's classification of plant life-history strategies Grime's classification of plant life-history strategies
Mira as seen from the Earth Mira as seen from the Earth
Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg
beaty of life beaty of life
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

For a complete list of videos, visit our video library