The atrioventricular valves.
Answer:
C. Organs are composed of tissues , which are composed of cells .
Answer:
Faciliated diffusion, which requires a carrier protein but no cellular energy. The energy for this process is provided by the concentration gradient of the substance being transported.
So mitosis will start with interphase which will be the longest step. Inside of interphase there will be and S phase where the DNA will be copied. Then the PMAT phases then these phases are where the cell is actually dividing and it ends with cytokinesis with the cell splitting one membrane into two different membranes.
Answer: (B) Ridge push and slab pull
Explanation: In ridge push, the mantle wells upward because of the convection and elevates the edges of spreading oceanic plates. Because these plates are higher at the spreading center, they are forced downhill due to gravity and eventually flatten out to the ocean floor.
