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

Author Question: The oldest rocks found on Earth are about ____ years old. a. 14 billion b. 10.5 billion c. 7.0 ... (Read 153 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
on: Jul 27, 2018
The oldest rocks found on Earth are about ____ years old.
 
  a. 14 billion
  b. 10.5 billion
  c. 7.0 billion
  d. 3.9 billion

Question 2

Where did the cosmic microwave background (CMB) come from?
 
  a. Photons emitted from the first stars
  b. Photons released from hydrogen in our galaxy
  c. Light scattered by dust in our Solar System
  d. Photons released when electrons and nuclei combined for the first time.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

orangecrush

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


craiczarry

  • Member
  • Posts: 527
Reply 2 on: Jul 27, 2018
Excellent

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

These young children are taking the initiative to explore their environment as they examine a snail These young children are taking the initiative to explore their environment as they examine a snail
Examples of three types of joints found in the body. Examples of three types of joints found in the body.
Rivers on Mars and Earth Rivers on Mars and Earth
Planets, Earth and Moon Planets, Earth and Moon
The greatest bone mass is found around age 30 for both men and women, with the later decline being f The greatest bone mass is found around age 30 for both men and women, with the later decline being f
Earth 150 Million Years Ago Earth 150 Million Years Ago
Video: Olfaction. or the sense of smell

For a complete list of videos, visit our video library