The Great Barrier Reef, located off of Australia’s eastern coast, is the largest coral reef ecosystem in the world. The reef covers an area over 300,000 square kilometers and includes a wide range of ocean depth, and it contains such biodiversity as to make it one of the most complex ecosystems on Earth. Much like any other ecosystem on Earth, the Great Barrier Reef relies on biotic and abiotic components to keep it functional and stable.
2 is crescent and 4 is gibbous
<span>If you look at hominids' mouths you can learn a lot. You can compare the teeth to see what they eat. Different foods cause a different amount and type of wear. You can also point out individuals by matching their teeth with what you know about them.</span>
