What structures are normally found in animal cells, not in plant cells and are involved in animal cell
reproduction.

Structure found in plants, but not animal cells, that carries out photosynthesis is the chloroplast.

Explanation:

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

the titanic would be the correct answer