Parts Covered for 8 years or 80,000 milesIf your vehicle has one of the following parts, thisFederal Emission Warranty covers that part for aperiod of 8 years or 80,000 miles, whichever occursfirst.These limits are counted from the time when yourBasic Warranty begins under 2.1(D).
Since, the upper leaf blade is directly faced to the sun, the rate of transpiration increases. Hence, to prevent excessive transpiration, stomata are more in lower surface i.e. relatively less transpiration happens from the lower epidermis. Plants also remove water in the form of (liquid), this is guttation.
Plant epidermis is unique because it is actually two different layers of cells: the upper epidermis and the lower epidermis. Sandwiched in between these two layers are two other important tissue systems - the vascular tissue system and the ground tissue system.