The oxygen within the leaf must be expelled to allow the to leaf sink, the level of oxygen within the leaf could correlate to the rate at which the leaf sinks or how far the leaf is able to sink if it is able to sink at all
Answer:
Central nervous system:
Central nervous system consists of the brain and the spinal cord. Short nerve impulse are present in the central nervous system. The information are obtained from the sensory organs. The damage of nerve fibers are irreparable in the central nervous system.
Peripheral nervous system:
Peripheral nervous system consists of the motor neurons, sensory receptor and sensory neurons. Long nerve impulse are present in the peripheral nervous system. The information are pass out to the effector organs. The damage of nerve fibers are reparable in the peripheral nervous system.
irregular polygon is any polygon that is not a regular polygon. It can have sides of any length and each interior angle can be any measure. They can be convex or concave, but all concave polygons are irregular since the interior angles cannot all be the same.