Is it valid to say that Phylum Chordata, Class Mammalian had achieved the highest of all life functions?

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

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Adistinctive characteristic of mammals that is not observed in other vertebrates is