Which month or months do you think are the "best" time of year to visit Rio de Janeiro? Why?

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

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 cell membranes have proteins that pump. ions out of the cell and potassium ions into this