Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Invertebrates (and higher animals) can also be placed in one of two groups based on how they develop as embryos.

A: Invertebrates (and higher animals) can also be placed in one of two groups based on how they develop as what?
****
Q: Eyespots do the cells in the front of a volvox typically develop to help swim towards light.

A: What do the cells in the front of a volvox typically develop to help swim towards light?
****
Q: The majority of arthropods live on land.

A:
Where do the majority of arthropods live?
****