The answer is the butter contains a new arrangement of atoms.
When melting, the atoms breaks bonds between them, they spread further apart and therefore became liquid.
For A, butter does not change into another substance, nothing is added or combined.
For C, butter can turn into a solid again if we cool it down below it's melting point.
For D, butter still contains the same number of atoms, again, only they became further apart.
Therefore the answer is B.
Answer: The correct answer is option (C) i. e. Reduced number of lymphocytes in the human body.
Explanation: HIV attack on the immune system of human body and reducing the number of white blood cells which are responsible for the defence of body against bacteria, viruses etc. HIV virus cannot reproduce and grow on its own. The HIV virus attached to the white blood cells and goes inside the white blood cells and start growing and grow in number.
It is the enterogastric reflex. The enterogastric reflex is one of the three outward reflexes of the gastrointestinal tract, the other two being the gastroileal reflex and the gastrocolic reflex. The enterogastric reflex is fortified in the duodenum by a pH of 3-4 and in the stomach by a pH of 1.5.
Absorption would be the appropriate term to describe the movement of organic substrates, inorganic ions, vitamins, and water flowing from the epithelium to the interstitial fluid of the digestive tract. The action is a significant digestive process because the absorbed substance would be distributed to the cells via the bloodstream.
Answer:
<em>photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.</em>
