Answer:
Hey There!!
You can say that...
Oxygen was added to early earth’s atmosphere through PHOTOSYNTHESIS!
Explanation:
The introduction of organisms which respired with the Sunlight and CO2 through PHOTOSYNTHESIS had brought a change in the Earth's early atmosphere...
PHOTOSYNTHESIS produces OXYGEN as a waste product (it's not needed by the organism)
This Oxygen is then released into the atmosphere where it was either converted into OZONE or left to move around the rest of he atmosphere...
I HOPE THIS HELPS WITH YOUR WORK!
:D
It’s sexual reproduction..... gross topic but what evs
Those are antidepressant drugs that
increase the level of neurotransmitters. Selective serotonin reuptake inhibitors (SSRIs) affect the process of neurotransmitters’ reabsorption back into nerve cells. This inhibitor prevents reuptake of serotonin and instead of that, the serotonin stays in the gap between the nerves-synapse.
Tricyclics are antidepressants that block the reabsorption of neurotransmitters, in this case, serotonin, and epinephrine. As a result, these chemicals are released into a synapse.
<span>Monoamine oxidase inhibitors (MAOIs) block the enzyme monoamine oxidase which breaks down serotonin, epinephrine, and dopamine. As a result, the levels of those neurotransmitters are increased.</span>
Answer:
The chromatin structure undergoes various modification for proper gene expression. Histone acetylation, histone deacetylation, methylation and sumoylation are important for the epigenetics.
Epigenetics may be defined as the change in the genome that affect gene activity, its expression and heritable phenotypic change of the organisms. The DNA sequence is not altered in the epigenetic modification but the gene expression has been modified by methylation or acetylation.