Where would you not find a cholinergeric nicotinic receptor?

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers

reflection is the bouncing back of a propagating wave when it encounters a barrier; usually shows an image of the source of light wave

1) bounces back from an opaque material

2) bounces back from the boundary

3) seen in mirrors

refraction is the bending of a propagating wave having a shift of direction as it passes through different media; usually seen in lenses to magnify or lessen

1) passes through a prism

2) moves from one medium to another

3) seen in lenses

usually, you should eat light spicy foods without eating spicy foods. if you don't drink alcohol, you can eat more fruits and vegetables. chondroitin synthase ( ) is an enzyme that catalyzes the chemical reaction: udp-alpha-d-glucuronate + n-acetyl-beta-d-galactosaminyl-(1-> 4)-beta-d-glucuronosyl- proteoglycan → udp + beta-d-glucuronosyl-(1-> 3)-n-acetyl-beta-d-galactosaminyl-(1-> 4)- beta-d-glucuronosyl-proteoglycan.