Anew mother asks the nurse why has my baby lost weigh tsince he was born

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient