Both insects and roundworms exhibit whereas sponges, snails, and leeches do not.
a. molting during growth
b. sensory perception
c. sexual reproduction
d. calcium carbonate shells

I think the correct answer from the choices listed above is option A. Both insects and roundworms exhibit molting during growth, whereas sponges, snails, and leeches do not. It is the process of shedding old feathers, hair or skin to make way for new growth.

Dgkdhbdjbslvdşxsjdkjskfhigdşihkdsjg

The higher you go up the less oxygen there is