because they are the decomposers
The first organisms are believed to have been simple archaebacterias. It is believed that, due to it's ability to live in harsh conditions and the design that is much simpler than that of a eukaryotic cell, they were the first to inhabit the Earth.
The first people to inhabit the Western Hemisphere was the Spanish.
Gohan is 7 when Trunks first appears in DBZ.
indians
The first people to inhabit the present-day region of Sudan were the Meroitic people.
Hollowed tree trunks
First goku killed frieza on planet Namek then his dad fixed him and trunks (future trunks) killed him.
people
Plants
yes
In season 4
Goten was 7years old when he did fusion with trunks.