In this diagram of a long bone, which type of bone marking is circled?
bone marking
a
foramen
b.
fossa
c.
osteon
d.
tubercle

Which sequence correctly shows the path of carbon dioxide during repiration?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil