the (drug and control) are the variable that you will change throught the conducted investigation.
The answer would be
older peopleshould be vaccinated because elderly individuals are more susceptable to diseases and proper vaccinations can help prevent this matter. some may even think the answer could be antibiotics but antibotics taken repetitively can lose its potency and the body will be immune to its once helpful purpose. hope this helped love
Answer:
both can react to form acidic compounds
An egg is fertile when it ovulates. That's three days so male sperm gets to the egg quicker but it dies quicker too. So if couples have sex before ovulation by the time the egg is fertile the male sperm is dead which leaves the female sperm. This is why there may be more women than men.
