Why do trees grow straight?

What causes trees to grow straight up? - Quora

Why do plants grow straight?

Where Do Teak Trees Grow - Teak Tree Growing Conditions

This tree's branches which grow straight up. : r/mildlyinteresting

Straight Lines of Pine Trees Growing in a Forest Stock Photo - Image of lines, long: 119953528

Drunken Trees: Dramatic Signs of Climate Change

Why do many trees grow shorter than bushes? - Quora

Simple Ways to Straighten a Tree: 12 Steps (with Pictures)

Why do some species of trees grow straight and others crooked? - Quora

Is there a reason why trees grow so tall? - Quora

Why do trees bend while growing? - Quora