Question

why leaves of though bushes are smaller size in size and roots are wild spreaded
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Answer 1

Answer:

Past researchers suggested that water availability and risk of overheating determines leaf size. ... This model helped explain why the leaves of desert plants were tiny (they can't afford to "sweat" out their precious water) and the leaves of plants in cool, shady spots often grow large

Answer 2

Answer :

leaves small because - water availability and risk of overheating determines

Roots spread wide because - detect the centre of gravity,