Describe the organism that scientists believe was responsible for changing the composition of the early atmosphere. what is it called and how did it change the atmosphere? why was this change to the atmosphere so important? enter your answer in the space provided.

Scientist believe that organisms known as cyanobacteria, or blue-green algae are responsible for changing the composition of the early atmosphere. ...

Explanation:

These microbes conducted photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and the what's most important : oxygen. These ancient organisms produced oxygen becoming a significant component of Earth's atmosphere. That is the reason why change is so important.

the answer to your question is sperm

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'