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 63 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
Excellent

covalentbond

  • Member
  • Posts: 336
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Detail of the Chinese-style gate of Nishi Hongan-ji in Kyoto; Momoyama period; National Treasure Detail of the Chinese-style gate of Nishi Hongan-ji in Kyoto; Momoyama period; National Treasure
Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ... Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ...
Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ... Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ...
Normal oxygen sensor frequency is from about one to five times per second. Normal oxygen sensor frequency is from about one to five times per second.
Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths. Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths.
Embryonic Period Embryonic Period
Video: Cellular Defects - Osteoblasts, Osteoclasts and Osteocytes

For a complete list of videos, visit our video library