To know if something is spoiled or molded. To make sure that it wont give you the stomach virus or food poisoning.
When you get a vaccine it injects a controlled amount of the illness into you, so the immune system can build up an immunity. The memory cells come into play when the illness comes back.
Answer:
retrovirus
Explanation:
a retrovirus inserts RNA to produce the viruses DNA in the hosts cells
this is why mothers can pass HIV and other retroviruses through pregnancy or breastfeeding
Answer:
It's super important to warm up before exercise. Without warming up before exercise, you can seriously hurt your body. You might pull a muscle, trip, and many other things that can do damage to your body. Starting right away at some sports or exercise without warming and having your body prepare for the amount hard work you're going to do will harm your body.
Hope this helps!
Brainly please- xD
