A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Answer:
When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.
Explanation:
When you heat up water, the water molecules start moving around faster and faster. ... So hot water is less dense than cold water. When you put the two together with the hot water on the bottom, the hot water rises to the top.
Please mark me as brainlist if it is helpful.
idkidkidkidkidkidkidkidkidkidkidkidkidkidkidkidkidk
I’ll like to answer but Where the question ?
