Birth rates, death rates, and migration rates are all part of measuring growth

Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.

What is the approximate circumference of the circle shown below? 12.2 cm

Explain the value of statistics and other data to positive economics and to normative economics