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

Author Question: The acidity levels of the early oceans were much lower than today, so it took 4 billion years of ... (Read 69 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
on: Jul 15, 2018
The acidity levels of the early oceans were much lower than today, so it took 4 billion years of weathering in order to reach the level of salinity present in the oceans today.
 
  Indicate whether this statement is true or false.

Question 2

Scientific knowledge of many events of the Precambrian is limited because ________.
 
  A) metamorphism altered and deformed many rocks
  B) plate tectonics consumed many of the oldest tectonic plates
  C) many ancient rocks have been eroded
  D) any ancient rocks have been covered by a mantle of sediments
  E) metamorphism, plate tectonics, erosion, and sediments account for the limited knowledge of Precambrian events


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

enass

  • Sr. Member
  • ****
  • Posts: 380
Reply #1 on: Jul 15, 2018
Answer to Question 1

Thank you for answering this question.

Answer to Question 2

Answer: E


nevelica

  • Member
  • Posts: 563
Reply 2 on: Jul 15, 2018
:D TYSM

yeungji

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Levels of DNA packaging to create a chromosome Levels of DNA packaging to create a chromosome
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ... Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ...
The lower intake manifold attaches to the cylinder heads. The lower intake manifold attaches to the cylinder heads.
Apply superficial friction to the upper and lower back. Stand to one side. Ask the recipient to lean ... Apply superficial friction to the upper and lower back. Stand to one side. Ask the recipient to lean ...
"early adulthood" VS."middle adulthood" "early adulthood" VS."middle adulthood"
Video: Exercise and cardiac output & Definition of stroke volume

For a complete list of videos, visit our video library