Answer:
C
Explanation:
Because a longer life will allow more people to make social contributions that will potentially benefit others.
When the two waves meet, there are two possibilities:
1.If the waves were both in phase and moving in the same direction, then, the amplitude will double, this is called constructive interference.
2. If the two waves were exactly out of phase, then they will try to move the water surface in all directions, thus, no movement and the waves cancel out. This is called destructive interference.
2. the vascular tissue system i believe hope this helps :)
Overweight because there is no room because of the amount of fat that is taking up space
Answer: The arteries (the aorta)
