A. Explain why the number of tan snails and black snails changed. b. How does this event support the idea of evolution by natural selection?
C. Give one reason why tan snails might disappear within a few years.
d. Using the data in the table, prepare a bar graph that shows information on snail
population before and after the volcanic eruption. Include all labels.

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.