Cause organisms are somethings very small and the scienctist cant reallly see they
Answer: Vaccines give you immunity to a disease without you getting sick first. They are made using killed or weakened versions of the disease-causing germ or parts of the germ (called antigens). For some vaccines, genetic engineering is used to make the antigens used in the vaccine.
Explanation: Vaccines greatly reduce the risk of infection by working with the body's natural defenses to safely develop immunity to disease.
Explanation:
The edible part of onion ( or bulb ) has no chlorophyll because it's present underground & it doesn't performs photosynthesis as sunlight is not available for the bulb. But the shoot part of the onion ( which grows up ) is green and has chlorophyll in it because it performs photosynthesis.
