By looking at there chromosomes such as the x and y gametes
The terrestrial gastropods are the only mollusks that have adapted to all the habitats of the Earth. They dwell in areas of high altitude, mountainous regions, hot and cold places. Land snails live and perform their vital functions on the ground and not in the sea or bodies of fresh water.
Answer: Im geussing we are looking at this thrugh a microscope try changing your fine adjustment knob
The outer skeleton provides protection due to the fact that invertebrates do not have backbones
The particles of the cold cup are are vibrating slow. The particles in the hot cup are vibrating fast.