Because while doing research scientist follow the scientific metod.The scientific method involves exploration and observation and the search for the answer for a question. And there will always some hypotesis that while experimenting reveal to be wrong.
B decomposition through a process called electrolysis.
Answer:
A
Explanation:
organs are made of tissue so it can't be D.
plant are made up of organs like roots, leaves, etc. so it can't be C.
skin (is an organ) is made up to 7 layers of ectodermal tissue so isn't B.
