An ecosystem<span> is </span>balanced<span> when the natural animals and plants and non-living components are in harmony- i.e. there is nothing to disturb the </span>balance<span>. With increasing pollution, change in migratory patterns, and rise of human population, many </span>ecosystems<span> are in danger of losing that harmony.</span>
Answer:
my prediction is maybe, d. a container of pond water with acid added to it.
Explanation:
because if you say the effects of acid rain on pond water, you can try that kind of experiment to find your product.
On primary succession newly exposed or newly formed rock is colonized by living things for the first time. And in secondary succession an area that was previously occupied by living things
Answer: Paleozoic
Explanation: The Paleozoic Era, which ran from about 542 million years ago to 251 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another plants became widespread. And the first vertebrate animals colonized land.
