A. Explain why leaves need stomata.  
b. Explain why plants need small amounts of minerals. Describe how they obtain these minerals.​

stomata are openings presents in epidermal cell of leaves .This plants needs stomata for the vital processes like transpiration and photosynthesis.

plant needs mineral to build sturdy cell wall and healthy root system.

plant get water through their root from the roots a minerals travels to the stems and leaves

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about