Answer: the earth was just starting to develop really well and well enough for life.
Explanation: atmospheric oxygen and oceanic calcium levels went up, but nobody needs to know that much facts about how earth developed, But the group called phyla started growing because of these conditions
When the population is large and dense.
Hope this helps:)
<span>The hyohae strucuture is tipical of fungi and some bacteria.</span>
The answer is B seminal vesicles
Composting, recycling, preventing waste.