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

Author Question: What happened at the start of the Cambrian Period? A) the first oxygen-producing bacteria ... (Read 29 times)

schs14

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
What happened at the start of the Cambrian Period?
 
  A) the first oxygen-producing bacteria appeared
  B) the first dinosaurs appeared
  C) early humans first appeared
  D) an explosion of genetic diversity appeared, leading to the appearance of the first animals

Question 2

The weight of an object on the Moon is what fraction of the weight of the same object on Earth?
 
  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

princessflame2016

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

1/6


schs14

  • Member
  • Posts: 569
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

abro1885

  • Member
  • Posts: 337
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

The testes. In addition to producing sperm, the testes secrete the male sex hormones, primarily test The testes. In addition to producing sperm, the testes secrete the male sex hormones, primarily test
Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen. Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen.
The carbon-nitrogen-oxygen cycle of The Sun The carbon-nitrogen-oxygen cycle of The Sun
Typhus bacteria Typhus bacteria
The oxygen isotope curve illustrates the ratio between 16O and 18O. The oxygen isotope curve illustrates the ratio between 16O and 18O.
Coolest Period Table EVER Coolest Period Table EVER
Video: Passive Smoke Exposure

For a complete list of videos, visit our video library