Shells are the exoskeletons of clams, snails and oysters. Hope that helps
Fragmentation, also known as splitting, as a method of reproduction is seen in many organisms such as filamentous cyanobacteria, molds, lichens, many plants, and animals such as sponges, acoel flatworms, some annelid worms and sea stars.
The answer for this question would be B
Average annual precipitation and temperature.
Interphase and cytokinesis are preparing the cell to go through mitosis and multiply