Match each statement with the type of weathering it describes. chemical weatheringmechanical weathering

Chemical weathering refers to the weathering of rocks by the use of certain chemicals

Mechanical weathering refers to the weathering of rocks by the application of physical forces or pressure or expansion of size of the rocks.

Explanation:

There are certain chemicals which helps in the decomposition of rock particles by breaking the bonds between rock particles. Feldspar is the example of chemical weathering which occurs when the substance present in the rocks combine with rain water. Due to this, rocks change into clay particles. Mechanical weathering of rocks occur due to the contraction and compression of rock due to change in temperature. Rocks also broken by applying pressure on it.

the real answer is b. scintillation counter

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.