These types of leaves have one main vein called the midrib , and smaller branching vein stomate

crenate

lobed

parted

The leaf has 2 types of venation the parallel venation and reticulate venation.

All of the veins, the petiole, and the midrib help position the blade so that it is facing the light source.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: