Answer:
Vaccines are important in order to prevent infections of more dangerous viruses because with the help of vaccine body makes antibodies which helps in protecting the body against viruses.
Explanation:
There is no medicine present in vaccines. Vaccine contains dead virus which is injected in the body. When the immune system detect these viruses, they make antibodies that are effective in controlling the virus. When these viruses attack again, the body is prepared for it.
Hii ana ruba.....................
Answer:D
Explanation:
Human activity and natural events both effect the ecosystem causing change.
Answer:
los pigmentos protege las plantas del daño causado por los rayos UV y la luz visible
ayuda a absorber la energía del sol.
controla fotosíntesis, el crecimiento y el desarrollo de las plantas
Explanation:
The correct answer is D.
Girls in general tend to spend more time with friends. This isn't to say that boys don't spend a lot of time with their friends but girls tend to engage more in their social relationships, whereas boys spend more time in competitive sports, more time in clubs and less time engaging in social relationships.
