What is used to water wash away greasy dirt ?
a) a molecule that is a salt
b) a molecule that has non polar end
c) a molecule with polar and non polar ends
d) a molecule that has a polar end

For apex the answer is C) A molecule with a polar and nonpolar ends

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

the product of the pressure and volume is also constant