Could you help me? Please I was thinking but couldn't find a answer for it.

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

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2

These are the components of the reservoirs of carbon that are exchanged in our environment.