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

Author Question: Why are periods the most fundamental time unit? What will be an ideal ... (Read 20 times)

anshika

  • Hero Member
  • *****
  • Posts: 510
on: Jul 29, 2018
Why are periods the most fundamental time unit?
 
  What will be an ideal response?

Question 2

The Precambrian witnessed the development of
 
  A) the first atmosphere.
  B) the ozone layer.
  C) photosynthesis.
  D) photosynthesis, an oxygenated atmosphere, and the ozone layer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bfulkerson77

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

Answer: Periods are small enough time units to chronicle major changes in life forms. Eras are far too big, and epochs are too small.

Answer to Question 2

Answer: D


anshika

  • Member
  • Posts: 510
Reply 2 on: Jul 29, 2018
Excellent

upturnedfurball

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

The Geologic Time Scale The Geologic Time Scale
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ... The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ...
Milankovitch cycles interact over time Milankovitch cycles interact over time
A clock is showing the time as exactly 3:00 p.m. and 25 s. A clock is showing the time as exactly 3:00 p.m. and 25 s.
Find the length of x to the nearest tenth of a unit. Find the length of x to the nearest tenth of a unit.
Video: Pasteur's Experiment

For a complete list of videos, visit our video library