The motor neuron and muscle fiber intersect at what is called. the neuromuscular junction.
Carbon is transfered by plants and animals.
An example of something that does not have mass would most likely be air. Because in order for something to have mass, it must take up space and have shape. Anything that you can think of that does <u>not</u> have <u>space or shape</u> does not have mass.
All the chemical processes used to build up or break down materials are called an organism's
