Question 4 of 10 How is a scientific theory developed?
A. One scientist proves his hypothesis with an experiment.
B. An experiment is repeated several times.
O c. Many different experiments are performed and repeated.
O D. A single experiment is performed once.
SUBMIT

the answer would be..

b. sucking

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )