« previous next »

Author Question: A pale yellow element occurring widely in nature is: a. iron c. sulfur b. phosphorus d. ... (Read 33 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?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Diabetes mellitus. The metabolic disease diabetes mellitus, with symptoms of polydipsia, polyuria, a Diabetes mellitus. The metabolic disease diabetes mellitus, with symptoms of polydipsia, polyuria, a
Pale Touchmenot Pale Touchmenot
In Charles Russell’s Trail of the Iron Horse (1910) steel rails stretch nearly to the sun while wisp In Charles Russell’s Trail of the Iron Horse (1910) steel rails stretch nearly to the sun while wisp
Kidney beans, steak, and iron-fortified bread and cereal are good sources of iron Kidney beans, steak, and iron-fortified bread and cereal are good sources of iron
British Iron Production, 1600–1870 British Iron Production, 1600–1870
Sulfur Shelf Fungus Sulfur Shelf Fungus
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library