Breast milk provides antibodies to fight diseases.
Breast milk is produced by mammary glands in the breasts and its main function is feeding an infant. Breast milk is the primary source of nutrition for newborns. The composition of the milk includes immune-boosting white blood cells, as well as stem cells, which can help organs develop, antibodies, proteins, amino-acids, oligosaccharides, growth factors, hormones, enzymes, vitamins, minerals…
A lighter black known as brown
The soil, fertilizers, and pesticides eroded by the surrounding waterways are transported via the water to a location different from their former one. These are taken away by the water flow and deposited in the delta area of the river. This delta is a land-form which is formed by the deposition of the similar substances, where the flow of the river is slower.
Hence, the correct answer is 'Option B'.
D. Kept the same to make an experiment a fair test.
‘a controlled variable’
