We just keep meeting huh? I believe the wave to be longitudinal, because the energy is going left to right.
Answer:
distance and length are the same quantity
All of the change that living things undergo as they grow is called development. That is the name when the changes are within a single unit and over a period of time as short as a lifetime. When the change occurs over thousands of years then it's called evolution.
Всяко действие има равно по големина и противоположно по посока противодействие.
