1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
spayn [35]
3 years ago
10

Which of the following statements does not accurately describe Precambrian Earth?

Chemistry
2 answers:
8_murik_8 [283]3 years ago
6 0

Answer:

C. The ocean water was salty and rich in dissolved oxygen.  

Explanation:

The oldest and longest of the Geological Ages, the Pre-Cambrian extends from the formation of the Earth, approximately 4.5 billion years ago, to 570 million years ago.

This period begins with the formation of the Earth about 4.5 billion years ago, where the Earth was an incandescent mass with rivers of dissolved rock, erupting volcanoes and large amount of sulfur. The atmosphere was initially similar to the atmosphere of Mars and Venus and was composed of nitrogen, ammonia, hydrogen, carbon monoxide, methane and water vapor, expelled by volcanoes, and no sign of oxygen.

After 700 million years, most of the rocks on the surface of the earth had already been cooled and a large amount of water had condensed into an ocean. Even so, the volcanic eruptions were still constant and were giving rise to several islands that were pushed toward each other by the movement of the mantle. In this period small unicellular beings in the ocean begin to appear, the primitive algae and bacteria that assimilate the carbon dioxide of the atmosphere transforming it into free oxygen, slowly changing the composition of the atmosphere that, in that period, was composed basically by nitrogen and steam of Water. They are of this period the oldest fossils of the earth.

Ilya [14]3 years ago
3 0

c. the ocean water was salty and rich in dissolved oxygen

You might be interested in
A black rooster mates with a white hen. Based on their genotypes, the chance that the offspring will be checkered is 100 percent
zheka24 [161]

Answer: BB is rooster.

bb is hen

6 0
3 years ago
Read 2 more answers
Which compound contains a triple bond?
Igoryamba
There are many compounds which contain triple bonds between two atoms. Few of the are as follow,

Nitrogen Molecule:

                           N₂   or   :N≡N:

Cyanide Ion:

                          CN⁻   or    [:C≡N:]⁻

Alkynes:
                          R-C≡C-R

Carbon Monoxide:

                          CO    or    :C≡O:

Among given compounds Alkynes belong to a class of unsaturated hydrocarbons. The carbon atom in alkyne is sp hybridized. These unsaturated hydrocarbons have their own characteristic chemical properties. 
6 0
3 years ago
Read 2 more answers
Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element? A - 1s2, 2s2, 2p6, 3s1 B -
iogann1982 [59]

✨✨✨✨✨✨✨✨✨✨✨✨

<h2><em><u>Technically yes but no because you have to fill the 3s orbital before the 5s orbital</u></em></h2>

<em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em><em><u>✨</u></em>

3 0
3 years ago
Sedimentary rocks that are made up of large pebbles and stones have a coarse-granied?
umka2103 [35]
....................................................................
3 0
3 years ago
Indicate whether the following represents a Chemical or Physical change: Milk sours
marusya05 [52]

Answer:

Chemical Change

Explanation:

Physical change normally mean that the change can revert back to its orginal state, which in this case that is not possible therfore it is a chemical change.

4 0
3 years ago
Other questions:
  • the scientist found that 2 grams of hydrogen reacted completely with16 grams of oxygen what was the total mass of the water prod
    7·1 answer
  • A baby weighs 3.91 kg and measures 51.4 cm. Convert the baby's weight
    8·1 answer
  • How many oxygen atoms are in 7.90 g of Al2(SO4)3?
    5·1 answer
  • If earth was like an hard boiled egg which part of earth would the egg white reprsent?
    11·1 answer
  • The Due Process Clause guarantees that
    12·1 answer
  • PLEASE HELP ME ILL GIVE YOU A LOT OF POINTS
    9·1 answer
  • We inhale oxygen and exhale carbon dioxide as a result of a ______ change in our bodies. a. physical b. chemical
    13·1 answer
  • Formula for the chemical reaction of limescale
    12·1 answer
  • Please help im lost.
    14·2 answers
  • A microwave has a wavelength of 0.028 m. What us this wavelength in scientific notation
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!