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

Author Question: Where does most of Earth's 14C come from? A) It was deposited on Earth when the solar system ... (Read 25 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
on: Jul 29, 2018
Where does most of Earth's 14C come from?
 
  A) It was deposited on Earth when the solar system first evolved.
  B) It is continually being formed by the impact of cosmic rays on the atmosphere.
  C) It is continually being formed as a result of the photosynthesis process
  D) It comes to Earth from outer space along with other cosmic rays.
  E) It was deposited on Earth many years ago by meteors.

Question 2

Earth moves about 30 km/s relative to the Sun. When you jump upward in front of a wall, the wall doesn't slam into you at 30 km/s because the wall
 
  A) has too little gravity to influence you.
  B) moves in the opposite direction to you.
  C) and you move at the same horizontal speed, before, during, and after your jump.
  D) has negligible inertia compared with the Sun.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sylvia

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

Answer: C


Sufayan.ah

  • Member
  • Posts: 512
Reply 2 on: Jul 29, 2018
Excellent

vickybb89

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Arterial System Anatomy Arterial System Anatomy
An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio
inflammatory system inflammatory system
The Formation of the Solar System The Formation of the Solar System
Ocean cover most of Earth’s surface Ocean cover most of Earth’s surface
Autonomic innervation of the female reproductive system Autonomic innervation of the female reproductive system
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library