You observe 4 cell samples under a microscope. identify which one belongs to a plant. a. none of these. b. sample 2 has mitochondria and chloroplasts, a cell wall and a large vacuole. c. sample 3 has mitochondria and a nucleus but no cell wall. d. sample 1 has a cell wall but no nucleus.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

maybe because its impossible for balloons to lift a whole entire house.

answer; coat color for blending in with dry grass;