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
earnstyle [38]
3 years ago
10

Name one source of energy which was used forChemical combination in primitive atmosphere​

Biology
1 answer:
notka56 [123]3 years ago
6 0

Answer:

Explanation:

Considering the atmosphere of the primitive earth to have contained water vapor, carbon dioxide, carbon monoxide, methane, and ammonia and/or nitrogen, then in the presence of an energy source, such as sunlight or lightning, a number of small molecules like hydrogen cyanide, HCN, are formed.

You might be interested in
As a child, Alex was short for his age. But during his teenage years, his height increased and he surpassed most of his friends.
Natasha2012 [34]

Answer:

puberty

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following processes does NOT occur in both plant and animal cells?
zimovet [89]
Photosynthesis occurs in plant cells, but does not occur in animal cells.
8 0
3 years ago
Ciri ciri tumbuhan telah mengalami perkembangan​
Dafna1 [17]

Answer:

Is that another language

8 0
3 years ago
Read 2 more answers
What is the monomer of the macromolecule
insens350 [35]
Monomers are the building blocks of the four basic macromolecules of life- monosaccharides are the monomers of carbohydrates, amino acids are the monomers of proteins, glycerol/fatty acids are the monomers of lipids, and nucleotides are the monomers of DNA.
Your welcome hope this helps. * • *
8 0
4 years ago
Which is an example of positive gravitropism?
AveGali [126]

Answer:

c. the plant root growing down into the soil

Explanation:

The plant root going down deep into the soil is an example of positive gravitropism. Gravity pulls everything towards the center of earth i.e. downwards and roots follow the direction of gravity automatically by growing downward towards soil that is why it is known as positive gravitropism. In short we can say that root favors the direction of gravity.

Shoot on the other hand show negative geotropism/gravitropism i.e. it grows towards the opposite direction of gravity. Shoot grow towards upside direction i.e. away from the surface towards sky.

4 0
4 years ago
Other questions:
  • How have Asian giant hornets been useful/good for humans (in Japan)?<br> ASAP!!
    12·1 answer
  • It's laundry day at Dan's house, so he plugs in his electric iron. What transformation of energy takes place inside the ron?​
    5·1 answer
  • Pretend you are writing in your field journal at the end of your stop in Tanzania. Be creative and write a paragraph describing
    8·1 answer
  • Explain the role of molecular phylogenetics in revising the traditional classification schemes
    6·1 answer
  • What type of magma has the least tendency to from pyroclastic flows
    5·1 answer
  • Choose an ecosystem near you. list three organisms in the ecosystem and describe limiting factors for each of them
    8·1 answer
  • What factors should we consider when determining why the chicken "loses" to the fox? A chicken can fly and perch on higher place
    7·1 answer
  • How does the fermentation of pyruvic acid in cells contribute to the formation of ATP? A. It completes the oxidation of glucose
    5·2 answers
  • Consider the factors that affect muscular strength. Read each scenario and then identify each label into the appropriate categor
    6·1 answer
  • which climate zone has hot summer, cold winter, and average amounts of precipitation throughout the year​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!