How is heat produced?

Heat is produced by matter. Matter is made up of atoms and molecules and energy causes the atoms and molecules to always be in motion. They either bumping into each other or vibrating back and forth to cause energy. ... The more molecules, more heat.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]