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
ExtremeBDS [4]
3 years ago
6

Which gas was not present around the time earth first formed?

Biology
2 answers:
Solnce55 [7]3 years ago
4 0

Oxygen was not present around the time earth first formed. Hope this helps. :)

Kisachek [45]3 years ago
3 0
The answer would be A. Methane
You might be interested in
The concept of aging as a result of cellular duplication errors is based on the fact that the body's ability to make new cells t
babunello [35]

Answer:

Through Mutation

Explanation:

Since our cells are able to produce exact copies of themselves. Thus, until unless some mutation has occurred and affected the ability of the cells to produce exactly similar duplicates copies of the parent cell, there is no way that an individual gets aged.  

Since, mutation affects the mitochondrial DNA it is pretty sure that a mutated cell has affected the longevity of a normal cell and then that mutated cell has produced million other mutated aged cell by replicating itself

8 0
3 years ago
Read 2 more answers
An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly
TiliK225 [7]
An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly describes what an observer will see as he looks in the direction of the orange?
A The orange will be seen by the observer immediately, but it will be very dim.The orange will become brighter as the observer's eyes adjust to the darkness.

B The orange will not be seen at all because light is not bouncing off its surface.

C The orange will only be seen after the observer's eyes adjust to the darkness.

D The orange will be seen by the observer immediately, but it will be very dim.
8 0
2 years ago
Read 2 more answers
The reaction involved in cellular respiration is similar to that involved in the burning of fossil fuels. What must be an essent
Oduvanchick [21]

The correct answer is option C

The reaction of cellular respiration and burning of fossil fuel needs carbon. Fossil fuel are like coal is made up of carbon. Organic compounds are made up of carbon(abundant), hydrogen and oxygen in small amounts.

The cellular respiration is the process by which the body obtains energy in the form of ATP by the breakdown of carbohydrates which is also a carbon compound.

8 1
3 years ago
Read 3 more answers
How does the structure of your DNA determine your traits?
klemol [59]

Well your DNA is built like a code that tells you what you may look like.

EX: if if you have blond or brown hair.

3 0
3 years ago
What determines the sequence of the mRNA codons?
TEA [102]

Answer: DNA

Explanation:

mRNA is the complement of the DNA template strand. Transcription (process that makes mRNA) requires DNA and nucleotides (A,U,G and C)

5 0
3 years ago
Other questions:
  • Dylan is on a strict vegan diet. He doesn’t consume meat, fish, eggs, or dairy products. Which nutrient is difficult to obtain n
    12·1 answer
  • Sometimes a few individuals are isolated from the rest of the population and can have very different gene frequencies. This is c
    6·1 answer
  • Loess is sediment made up of fine particles of silt that have been deposited far from their source by ____________________.
    11·2 answers
  • Which water source becomes polluted as it travels over the earth?
    6·2 answers
  • The diet of a body builder should contain a large amount of
    10·2 answers
  • You performed a blood typing activity as described in the lab manual. you observed agglutination (clumping) with anti-b and anti
    11·1 answer
  • If a cannon is fired from the front of a boat, the boat will drift backward. Which one of Newton´s laws best describes this moti
    9·1 answer
  • Sensory and motor neurons are connected to the nervous system
    14·2 answers
  • 9. Draw brackets from left to right to signify the codons in this amino acid chain (please someone help) (No Sending LINKS!)
    15·1 answer
  • What are organic compounds
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!