Not all people can automatically filter out unecessary information
people may have additional challenges that make it harder to comprehend
people are busy with survival and do not need information
can all be true
but in a emergency situation the person will listen more closely because they need the information badly
Donating time to a substance abuse facility
its addicting then it leads to abuse because you have to much of it
hope this helps :)
Answer:
the last choice.
Explanation:
veins have valves because venous pressure is often not great enough( as the blood must overcome gravity and other forces) to return the blood to the heart.
valves mainly prevent the back flow of blood.
I don't know the first part, but extra rain will let more mosquitoes (the primary transmitter) breed more.