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
Ratling [72]
2 years ago
8

Before there was any life on earth, which gas was absent from the ancient atmosphere?

Geography
1 answer:
mina [271]2 years ago
6 0
Oxygen was absent on earth
You might be interested in
"Weather" and "climate" are ________. A) synonyms B) differentiated because climate studies the stratosphere C) differentiated b
Brut [27]

Answer: C: differentiated because climate studies the long-term patterns over time

Explanation: Weather is just what you see outside, like sunny, clear, or rainy. Climate is a region’s constant weather PATTERN like for example, Alaska is frigid and icy while Florida is humid and tropical.

7 0
2 years ago
When studying the average number of children that are born to each woman in a country (assuming the mother lives to the end of h
yanalaym [24]
D. Total fertility rate
6 0
3 years ago
Read 2 more answers
Answer these questions: (3 to 8 paragraphs for each question)
Karo-lina-s [1.5K]

Answer:

The universe is comprised of more than 75% of materials that are not visible and are often considered to be the dark matter. These are the baryonic matter that is formed due to the accumulation of protons, neutrons as well as electrons. They can be baryonic or non-baryonic type of matter. These dark matters are the substance that interconnects mostly by gravity along with some visible matter such as the stars and planets. These matters do not reflect light and they attract other matters, forming the major mass of the entire universe.

4 0
3 years ago
Which of the following products comes from a non-renewable source? A. apples b. maple syrup C. cotton D petroleum jelly
egoroff_w [7]

Answer:

Petroleum Jelly

Explanation:

Petroleum jelly is made from the non-renewable resource, Coal. Apples are made from trees, which can be replaced, maple syrup is made from trees, and cotton is made from a plant. Coal, cannot reproduce.

3 0
3 years ago
Read 2 more answers
This is one factor that contributed to the fall of the Roman Empire. A:It was defeated by Greece during the Pyrrhic War. B:Its t
denis23 [38]
B) Its territory was too vast to defend

hope this helps
7 0
3 years ago
Other questions:
  • Using complete sentences, explain how the domestication of plants and animals and the use of agriculture affected groups living
    11·2 answers
  • 1. Can a rock that has undergone metamorphism turn into a sedimentary rock? If so, how? If not, why not?
    6·1 answer
  • Who showed that the basic building blocks for life could have formed from the gases found in Earth's early atmosphere?
    13·1 answer
  • What are the answers to numbers 7,10,12
    6·1 answer
  • Which feature of loblolly pines has helped them become the most abundant species of pine in the southern United States?
    13·2 answers
  • In which non-Spanish speaking country do many people speak Spanish?
    14·1 answer
  • Discuss the status of women's rights in East and South Asia. In a short paragraph, identify three complications that
    14·1 answer
  • CAN SOMEONE HELP ME?!?!?!?!?!?!?!? I WILL MARK BRAINLIEST PLZZZZZZZZ!!!!!
    15·2 answers
  • Hi everyone! the trumptards want to take gay rights away! so now we wonderful lgbt peoples are now claiming november AND june as
    14·1 answer
  • Explain how to write a large number using scientific notation.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!