Classify the structures homologous or analogous, depending on their structure and function

Analogous structures have a different evolutionary ancestries but they have the same function

while homologous structures are the opposite; they have similar ancestries and common traits but maybe not have the same function in an organism

anti-human il1 beta stable cell line (gevokizumab) can be provided from creative biolabs.

explanation:

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom