Answer:
Crop rotation is the method of growing a series of different types of crops in the same area across a sequence of growing seasons (China does this). It reduces dependence on just one type of nutrients, it also helps control pests and weeds by the plants developing a resistance all at once.
i do believe the answer is d for one wheat and other barley products are not made of fats but carbs. and they are really good for energy because it can be broken down alot slower than many other energy sources.. hope this helps.
thymus plays important role by development of a normal, healthy immune system. thymus function is to generate mature lymphocytes
In other words, white blood cells that help fight of illness in the immune system.
sorry if I am wrong.
