What most directly enables salmon to swim in a river? a. energy from the motion of the river b. energy from the sun c. energy from its food d. energy from the movement of earth

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates