Gamma-aminobutyric acid is also known as GABA. It look as if
to decrease synaptic transmission and is actually used in drugs called
GABAergic drugs or GABA analogues. These drugs are used as hypnotics,
anticonvulsants, tranquillizers and sedatives which seems related to be a depressant type of drug.
Answer:
The behavior of chromosomes during meiosis and fertilization is responsible for most of the variation that arises in each generation. Three mechanisms contribute to genetic variation arising from sexual reproduction: independent assortment of chromosomes, crossing over, and random fertilization.
Once the Earth was full of water (ocean) after volcanic activities the mainland became land ( sorry about my english i am hungarian and i am still learning the language )