Why do leaves needed for a tree to grow

Leaves are needed in a tree because a tree needs photosynthesis in order to survive,  and the leaves bring in the photosynthesis,and photosysnthesis makes food so that why a tree needs leaves.

Writing, you can revisit previous parts of the lesson by returning to the course map. be sure to refer to the lab’s student guide, which you can find on the first page of the lab experiment activity

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11