Why is Leonardo da Vinci's Vitruvian Man considered to be a typically humanist piece of Renaissance art?

Where would you be most likely to find a freshet?

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons