Answer:
A tissue in our mouth that produces saliva to help swallow food! :)
Since its negative, it means it is growing away from the light source. It's a rather odd question because plants usually grow towards the light source.
The property called cohesion
Answer:
cell
tissue
organ
system
human organism
Explanation:
unicellular organisms only have one cell since two or more cells form a tissue their level of organization is restricted to cell
cell
two or more cells form a tissue
two or more tissue forms an organ
two or more organs form a system which must work in coordination for efficiency
two or more systems make up a human organism
