Are sharks and dolphins homologous or analogous?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity