Answer:
Biotechnology is a new branch of science
Explanation:
The begining of biotechnology was somewhere around the 1920s i think so it is not old
Polar substances .
u havent given any option
There are 5 levels of cell organization recognized by biologists.
The answer you are looking for is called Serotonin. Please put this as the brainiest answer thank you and hope this helped.
tress
plants
humans
bacteria
cells
grass
soil
animals
fish
insects
chicken
starfish
jellyfish
spider (or spiderman you never know)
lions
tigers
elephants
flamingo
chicken
sharks
crocodile
jellyfish
shrimps
roses
daisys
and soooooooo many more
