Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
<span><span>The plant body consists of two basic parts--- the </span>shoot system<span> and the </span>root system</span><span>Shoot system<span> is above ground and includes organs such as </span>leaves, buds, stems, flowers, and fruits</span><span><span>The functions of the shoot system include </span>photosynthesis, reproduction, storage, transport, and hormone production</span><span><span>The </span>root system<span> is below ground and includes </span>roots as well as modified stem structures<span> such as tubers and rhizome </span></span><span><span>The functions of the </span>root system<span> include </span><span>anchorage, absorption, storage, transport, and production of certain hormones Hope this is what you were asking for! :)
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<span>uvula is the answer for this problem.</span>
