On the laboratory bench right in front of you, there is a bone. You can tell that it has an articular surface that is smooth and just slightly concave. This skeletal feature would be referred to as a Facet.
<h3>What is the composition of human bone?</h3>
A transcription factor collagen forms the structure of bones, and calcium phosphate, a mineral, gives the framework strength and hardness. When other body parts require calcium, bones release some of the calcium they have stored into the blood.
<h3>Why are bones so durable?</h3>
A living, developing tissue is bone. Collagen, a polypeptide that provides a soft structure, and calcium, a mineral that gives strength and hardness, make up the majority of its composition. Together, these factors give bone the strength and flexibility it needs to withstand stress.
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<span>The correct answer is A. Photosynthesis. To conduct photosynthesis, you need chloroplasts and these are found in the leaves which is why the leaves are green. Roots don't have them and they aren't exposed to the sun and don't create energy using photosynthesis. They do however absorb nutrients from the soil.</span>
Answer: B
Explanation: The lizards are trying to adapt t the environment, therefore, it would be B.
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