Answer:
D) is the answer because it only allows particular molecules to get in and out
Answer:
Some of these reasons include- age, avoiding pregnancy, preventing HIV and STIs and some social factors too. Social factors play an important role in this, like- a social barrier has been set to restrict sexual activity before marriage. Another important risk factor includes- active talking regarding sexual decisions
Explanation:
Answer:
Alzheimers is a disease that affects the main, it starts out gradually and causes memory loss, issues with speech, affects the ability to think clearly and affects the way a person moves.
Explanaton:
<span>The correct answer is A. In the afternoon. It's not right after a meal and it's not like you just woke up and are not fully awake. It's also good because it's not the hottest part of the day so you won't overheat and suffer a heatstroke. Afternoon is therefore the perfect period for working out.</span>
Heart disease is the leading cause of both men and women in the U.S
