Question

Explain Gravesande's ring - and - ball experiment to describe thermal expansion in solids......​

Answer 1

Answer:

Gemmule is produced by few genus of freshwater sponges such as Spongilla and some marine species including ficulina ficus, sea sponges, and other poriferans, which produces gemmules to survive in the unfavourable conditions and to germinate and produce new sponges.