Which way of moving molecules across a membrane requires energy?
a. meiosis
b. diffusion
c. osmosis
d. active transport

The real answer is keeping the world healthy so we won’t die

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

Qrepresents joules in the formula