Why is it important to eat fibre even though the chemicals in it are not used by your body?

Which of the following is not a defining characteristic of plants?

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.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell