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
Irina18 [472]
3 years ago
5

Please help really soon (I'm confused) :|

Chemistry
2 answers:
gladu [14]3 years ago
5 0
Nitrogen, and oxygen because they are in highest ratios
Yanka [14]3 years ago
4 0

Answer: carbon dioxide was replaced with oxygen

Explanation:Comparison of Earth's prebiotic and modern atmospheres. Before life began on the planet, Earth's atmosphere was largely made up of nitrogen and carbon dioxide gases. After photosynthesizing organisms multiplied on Earth's surface and in the oceans, much of the carbon dioxide was replaced with oxygen

You might be interested in
How long does it take the Earth to move from Point A to Point C?
e-lub [12.9K]

Answer:

24 hours

Explanation:

8 0
3 years ago
Read 2 more answers
PLEASE HELP ITS A TESTT!!
Sergio [31]

Answer:

D

Explanation:

6 0
3 years ago
A water sample is found to contain 59 ppm
NeX [460]

Explanation:

k so basically u gotta do 59/1000000 then multiply that by 972 which gives u 0.057348

8 0
4 years ago
How is the weathering of rocks by water different from the weathering of rocks by ice?
andrey2020 [161]

Answer:

It is because water is liquid and it can be weathered easily. While weathering by solid is a bit dangerous because of its hardness.

Explanation:

4 0
3 years ago
I need help with science pls help me
ryzh [129]

Answer:

Explanation:

6. When insulating materials rub against each other, they may become electrically charged .

7. Charging by conduction involves the contact of a charged object to a neutral object.

8. Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size.

9. Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size.

6 0
3 years ago
Other questions:
  • Is carbohydrate a element or compound
    6·1 answer
  • The group of elements alkali metals react with are called the?
    9·1 answer
  • What is the ph of a buffer that consists of 0.45 m ch3cooh and 0.35 m ch3coona? ka = 1.8 × 10–5?
    6·1 answer
  • If the average speed of a car is 45km/s, how far can it travel in 5 seconds?
    8·1 answer
  • Is exploding dynamite a chemical change or a physical change
    9·2 answers
  • Describe happens when you move any atom toward the positive nuclear charge.
    13·1 answer
  • Which best explains the statement "It has no definite volume”?
    8·2 answers
  • How many joules of heat are required to heat 100.0g of room temperature water to the boiling point
    9·1 answer
  • Which of Newton's Laws describes the relationship between the mass
    8·1 answer
  • In the dehydration of hydrated salt the sample was slightle moist because of high humidity briefly explain how the moisture affe
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!