The nursing usually takes up to 18 months, i.e. one year and a half.
The baby dolphin may however remain with his mum for up to 3-6 years.
Im going to guess the 2nd one.
The 1st one just shows how trees can make ____ and then goes to water, the sun, then the rain but it CAN be used as one.
The 2nd one seems to explain the best it can show about weather, water, landforms, the sun, and seems like a better one to choose.
Its outdated maybe because of time issues or over-usage<span />
