Are Red Blood cells the only cell you need

No, they are not the only cells you need.

Explanation:

You also need white blood cells, which are the cells that help your body fight off infections, viruses, and more. If there were no white blood cells in your body, you would be unable to fight off bacteria or pathogens, making your body vulnerable to diseases and more. It wouldn't be too long until it'd kill you.

1. cold turkey (no outside ). about 90% of people who try to quit smoking do it without outside support -- no aids, therapy, or medicine. although most people try to quit this way, it's not the most successful method. only about 5% to 7% are able to quit on their own.

2. behavioral therapy. this involves working with a counselor to find ways not to smoke. together, you'll find your triggers (such as emotions or situations that make you want to smoke) and make a plan to get through the cravings.

3. nicotine replacement therapy. there are several types, including nicotine gum, patches, inhalers, sprays, and lozenges. they work by giving you nicotine without the use of tobacco. you may be more likely to quit with nicotine replacement therapy, but it works best when you use it with behavioral therapy and lots of support from friends and family. and remember that the goal is to end your addiction to nicotine, not simply to quit using tobacco.

explanation:

mark brainliest

all the above is what i would say