How do the muscles in thermoregulation?

a: muscles produce oil that burns in the presence of oxygen.
b: muscles undergo a chemical reaction that absorbs heat.
c: muscles break down carbon dioxide, producing heat.
d: muscles contract rapidly, producing heat.

Option D

Explanation:

Thermoregulation can be defined as the phenomenon of the body by which it regulates the temperature inside the body. The internal temperature of the body has to be maintained even if the temperature in the outer environment is changing.

In case the body encounters colder environment, the muscles of the body contract rapidly producing heat.

The contraction of the muscle requires  hydrolysis of ATP molecules which in turn releases energy in the form of heat. This heat is used by the body to maintain an optimum temperature within the body.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;