The human reproductive system is regulated by the endocrine system.
<u><em>Turtles are reptiles of the order Characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield.A turtle is faaster than a human,But it shell is heavy,and its house.</em></u>
<span>a.
migrating waterfowl use flooded rice paddies on their travel routes
i took a test on it.
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<span>The answer is A. A stable ecological niche leads to the absence of selection pressures, which in turn causes species to remain unmodified or in stasis. This can be simplified with an example: If there are just enough lions on an island and just enough buck for both species to survive without the lions starving or the buck being killed off, neither of the species would have to adapt to survive because their predator-prey relationship is stable. This means that they can continue to live in this state of stasis or equilibrium. </span>
Scales provide protection, they have lungs for breathing air, internal reproduction allows them to reproduce on land.
