what has sulfur been used in the past?what has sulfur been used in the past?
sulfur is the element that is used in insecticides.
Rain forests have been used for paper,oxygen, and medicine.
Sulfur is a yellow mineral. It can be used in papermaking, plastic., explosives, and matches.
Sulfur dioxide is not in flour.
Carbon disulfide can be used to separate a mixture of iron filings and sulfur. This is because carbon disulfide can be used to dissolve sulfur, thus leaving you with the iron filings.
what has sulfur been used in the past?what has sulfur been used in the past?
yes it has been used successfully in the past
Yes it has been successful in the past
"Have been" is used to indicate actions that started in the past and continue in the present. "Had been" is used to indicate actions that were completed in the past before another action occurred.
sulfur is the element that is used in insecticides.
sulfur is used
Yes it has been successful in the past
Have is used for present and Have been is used for past continous.
Used (e.g "It had been used for...", "John was used", etc.)
"Been" is the past participle of the verb "to be." It is used to indicate that something has happened or existed in the past.
it has been used for life forms for bones and shells.
"Been" is the past participle of the verb "be," used to indicate a state or condition that was present in the past.