It is also possible to move substances across membranes against their concentration gradient (from areas of low concentration to areas of high concentration). ... If the energy of ATP is directly used to pump molecules against their concentration gradient, the transport is called primary active transport.
Hope this helps
I think tracheae which is B not sure tho
Answer:
it preserved and resourcefully used
I think for your distilled water of 1 it would look like 27.8 +/- 5 because you can go 5 above or below your average and 2 would be 27.8 +/- 10 because you can go 2 times below or above your average?
Try this
I can infer that when I throw my coffee across the room, it will accelerate and the kinetic energy will be transferred from myself to the coffee cup.
