What is the volume of CO gas if it has the mass of 0.196 grams and a density of 0.00196 g/ml?

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

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

Several billion years ago which gas was the least prevailant in the atmosphere