Animal cells do not have cell walls<span> because they </span>do not need<span> them. </span>Cell walls<span>, which are found in </span>plant cells<span>, maintain </span>cell<span> shape, almost as if each </span>cell has<span>its own exoskeleton. This rigidity allows </span>plants<span> to stand upright without the </span>need<span> for bones or musculature.</span>
I believe that the correct answer is D.
The correct answer would be option D, All of the above.
Speed is an important component of Tennis, Soccer and Swimming.
Explanation:
Tennis, Soccer and Swimming are the sports which require instant moves with high speed.
- Tennis requires immediate speedy moves to catch the ball. If the speed of the player doesn't vary with respect to the ball hits, there will be chances of losing the game. So speed is crucial in Tennis.
- Soccer is a game in which players run after a ball to do the goal. Here speed also plays an important role. If the speed of the player is not good enough, there are pretty chances that other players may take the ball and do the goal.
- Swimming is the game which is solely dependent upon speed. The swimmer who has the highest speed will win.
So speed is an important component of all of the above mentioned sports.
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