Answer:
B
Explanation:
"I think my bike is making a scraping noise because the bearings are not lubricated."
Explanation:
i found this the question is different but I think the situation is same
Answer: Vitamins
Explanation:
they are nutrients that are made by living things
Answer:
Explanation — This page looks at the oxidation of alcohols using acidified sodium or ... of sodium or potassium dichromate(VI) acidified with dilute sulfuric acid. ... The electron-half-equation for this reaction is as follows: ... To do that, oxygen from an oxidizing agent is represented as [O]. ... Article type: Section or Page.