Seismic Waves!
Hope this helped :-)
The reason why crack is more addictive than cocaine was
because it is smokable of which cocaine could not do and by smoking it, it
easily reaches the brain—making a person addicted to it than the cocaine in
which is not even smokable.
A total of <u>20</u> amino acids compose the majority of protein in living things and nine are <u>essential</u> to human.
- All living organisms, from bacteria to people, depend on amino acids for survival.
- The same 20 types of amino acids are present in all living things.
- Only 21 amino acids are required by the human body to create all the proteins required for growth and function.
- Your body can create thousands of different types of proteins with only the same 21 amino acids because they can be ordered in a wide variety of ways.
- The body is unable to produce essential amino acids. They must therefore originate from food.
- Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are the nine essential amino acids.
learn more about amino acids here: brainly.com/question/1201532
#SPJ4
<em>A control is that group in an experiment that does not receive any treatment and is used for comparison with the test result.</em>
<u>Answer:</u> <em>A) a control</em>
<u>Explanation:</u>
In the experiment mentioned, the control is missing because the test group as mentioned are the plant set that receives the treatment that is the different concentration of nitrate and phosphate.
The effect of these nutrients on growth will be observed and evaluated. The time period of the experiment is one month which might exceed.
