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

Ex Input:
Sexually do invertebrates reproduce.

Ex Output:
How do invertebrates reproduce?

Ex Input:
Most have cells that are not able to exchange gases with the outside environment do multicellular organisms need transport systems.

Ex Output:
Why do multicellular organisms need transport systems?

Ex Input:
Insect animal group can be found in every environment on earth, but primarily in the warm and moist tropics.

Ex Output:
What animal group can be found in every environment on earth, but primarily in the warm and moist tropics?