D is the best because the water pollution affects the environment
The reason behind why gymnastics often considered to be the purest of all sports or athletic activities is that you have to be simple, more graceful, holistic in performing the routine that you want to convey to the audience. Simple gestures in gymnastics means a lot to the people judging it.
<span>The most primitive vertebrates whose reproductive pattern includes the amniotic eggs are the reptiles.
An amniotic egg is filled with amniote, which are these membranes that have fluid in them. They serve to protect the embryo and enable it to survive any harsh conditions that may harm it. These cells have protein shells as well as calcium that provide further protection.
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1,4,2 those are the answers in order