Answer:
<h3>It happens when a population ages an increase in the population's mean and median ages.</h3>
- <u><em>A) economic uncertainty </em></u>
- <u><em>B) ethnic persecution </em></u>
- <u><em>F) increased industrializing </em></u>
- <u><em>G) migration</em></u>
<em>Hope this helps!!</em>
<span>The correct answer is (D), sheep. Didgeridoos and boomerangs are artifacts invented by humans in Australia. Koalas evolved in Australia, and to this day are only found in the wild in Australia. In contrast, sheep were first domesticated in ancient Mesopotamia and then brought by humans to other parts of the world. The first sheep were brought to Australia by ship, from the Cape of Good Hope in 1788.</span>
D. Alexander von Humboldt
