Author Question: Volcanoes are found at ____________________ plate boundaries and ____________________ plate ... (Read 121 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
Volcanoes are found at ___________________ _ plate boundaries and ___________________ _ plate boundaries.
 Fill in the blank(s) with correct word

Question 2

A rock sample containing an isotope with a half-life of 12 million years has an initial mass of 72 grams. How much of the daughter isotope will be present after three half-lives?
 A)4.5 grams
 B)9 grams
 C)18 grams
 D)54 grams
 E)63 grams



Danny Ewald

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

divergent, convergentconvergen t, divergent

Answer to Question 2

E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Danny Ewald

  • Sr. Member
  • ****
  • Posts: 332

 

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

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).

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

For a complete list of videos, visit our video library