Answer:
c
Explanation:
Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body such as your liver, respiratory system, or blood.
Answer: You should Keep closed-toed shoes with rubber soles under your bed.
Move heavy objects to lower shelves.
Remove or secure artwork hanging over beds or seating.
Secure heavy appliances and shelving.
& Practice shutting off the gas, water, and power.
( <em>hope this helped )</em>
Answer:
Explanation:
Digestive System gets nutrients from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go 2Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out
Answer:
B. true, because immunity is nonexcludable, and everyone can simultaneously enjoy the "herd immunity."
Explanation:
When a lot of people get vaccinated against a disease, the chances of spreading of that disease drastically decreases in the population. Even if someone is not vaccinated against that disease, their chances of contracting it are low because other people are vaccinated and hence its incidence rate in population is low. This phenomena is called as herd immunity. For example: 19 out of 20 people should be vaccinated against measles to protect the non vaccinated ones.
Herd immunity benefits the entire public and is considered a classic public good. It is nonexcludable which means that someone can not be excluded from being benefited by it. Two people residing in the same population will reap the benefits of herd immunity even if the degree of benefit might be different.
