
Last option: Preserve an ecosystem

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.
The answer is the sphenoid bone
When a ray passes<span> from air into glass the </span>direction<span> in which the </span>light<span> ray is traveling </span>changes<span>. ... This bending of a ray of </span>light<span> when </span>passes from one substance<span> to </span>another substance<span> is called refraction. Hope this helps!!!</span>
Answer:
The human skeleton performs six major functions: support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation