It will be 1 and 2.
This is not biology. This is Science.
Matter can be broken down into two categories: pure substances<span> and </span>mixtures.Pure substances<span> are further broken down into elements and compounds. ... A chemical </span>substance<span> is composed of one type of atom or molecule. A </span>mixture<span> is composed of different types of atoms or molecules that are not chemically bonded</span>
Here is the answer that would best complete the given statement above. Autonomic nervous system reactivity in humans appears to be e<span>xplaining the acquisition of phobias and other human behaviors. Hope this is the answer that you are looking for. Have a great day ahead!</span>
<h3>16 protons</h3><h2> </h2>
I hope it helps for you
