« previous next »

Author Question: A pale yellow element occurring widely in nature is: a. iron c. sulfur b. phosphorus d. ... (Read 20 times)

jessicacav

  • Hero Member
  • *****
  • Posts: 558
on: Jul 21, 2018
A pale yellow element occurring widely in nature is:
 
 

a. iron c. sulfur
  b. phosphorus d. antimony



Question 2

For human survival, approximately what percentage of the air must be oxygen?
 
 

a. 21 c. 54
  b. 77 d. 42



cam1229

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 21, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Iron Deficiency Symptoms Iron Deficiency Symptoms
A blood smear. The smear reveals representative cells from each formed element group: red blood cell A blood smear. The smear reveals representative cells from each formed element group: red blood cell
Mercury (element) Mercury (element)
Sodium is so widely available in foods that you don’t have to go out of your way to meet your ... Sodium is so widely available in foods that you don’t have to go out of your way to meet your ...
Lead Displaces Iron Lead Displaces Iron
Sulfur dioxide is a toxic gas, has a distinct, pungent odor, and contributes to acid rain and ... Sulfur dioxide is a toxic gas, has a distinct, pungent odor, and contributes to acid rain and ...
Video: How to find out if a population is evolving?

For a complete list of videos, visit our video library