Aquatic animals would be it
<span>Organism that has both male and female reproductive organs and can perform both the male and female parts of reproduction.</span>
Populations
communities
ecosystem
biosphere
<span>Most vulnerable side is the ventral because in the dorsal side there is the backbone. Most of the harder bones are on the dorsal side. So then the ventral side also known as the belly side is more vulnerable and softer.Sorry I took Forever LOL</span>