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
scoray [572]
3 years ago
9

Oxygen was introduced into the atmosphere as a byproduct of a. respiration. c. dehydration. b. photosynthesis. d. osmosis.

Biology
2 answers:
Tanzania [10]3 years ago
4 0
Photosynthesis  asdfsfdnaflkjns
 
natima [27]3 years ago
3 0

Answer: b. photosynthesis.

Explanation:

Photosynthesis is a  chemical reaction that occurs in the cells of the plant leaves. The process requires carbon dioxide from the atmosphere and water as reactants. These reactants get converted into carbohydrates (glucose) and oxygen as byproducts in the presence of sunlight. For the first time on earth the oxygen was produced by the photosynthesizing cyanobacteria. As these organisms used to fix carbon dioxide in water.

Therefore, oxygen was introduced into the atmosphere as a byproduct by the process of photosynthesis.  

You might be interested in
Which statement best describes how a beaver is interacting with a living part of its environment
SVETLANKA909090 [29]

A

Because grass is a plant so it’s like living compared to water and being active isn’t even a part of the environment

3 0
3 years ago
Looking at the Punnett square, list the possible phenotypes and frequencies of
liubo4ka [24]

Answer:

Phenotypes:

Aa with a frequency of 2

aa with a frequency of 2

The children have equal chances of having aa or Aa

5 0
3 years ago
How does volcanic activity affect climate? Are these examples of short-term or long-term affects?
musickatia [10]
When a volcano erupts , a mixture of gases and particles is released into the air . The cooling influence of an individual volcano will dominate for the period immediately after the eruption but the warming impact will last much longer.
7 0
3 years ago
The suffix that means a creation of an artificial opening is spelled as
Trava [24]
The Suffix is -ostomy 
3 0
3 years ago
Which term describes a chemical reaction in which water is gained?
lukranit [14]
The term that is used to describe a chemical reaction in which water is produced or gained I believe is Dehydration Synthesis.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Would you expect plants that normally live in the desert to exhibit more pronounced phototropism than forest dwelling plants? Ex
    6·1 answer
  • In the exercise-depression study by Blumenthal et al. (the SMILE study), which of the treatments had the best success when consi
    9·1 answer
  • Why should we use CER method when approaching a question
    5·1 answer
  • Carson's book most likely helped encourage the growth of which of the following fields?
    8·2 answers
  • What would most likely happen to a species of bird if the forest in which it lives were cut down?
    8·1 answer
  • What would happen if there were no decomposers in a food web?
    15·2 answers
  • What is the relationship between dna and chromosome?
    10·1 answer
  • Compared to mountains on land, mountains located on the ocean floor are _____. similar in heigh
    12·2 answers
  • Which of the following is not directly involved in protein synthesis?
    15·1 answer
  • What is some evidence that makes plate tectonics is such a firmly believed idea?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!