An aggregate of cells in an organism that have similar structure and function.
<span>I believe the answer is this:
A free-diving vessel used to explore the ocean at great depths.
Hope this helps.</span>
The answer is B. Cross-pollination occurs when pollen fertilizes female egg cells on the same flower.
He first divided all living organisms in 2 groups
Animal or Plant
He then put these into subgroups
Animal subgroups: land, water, air
Plant subgroups, small medium or large
Not a very specific approach to taxonomy but it was used for well over 100 years
