Answer:
silicon-32
Explantion: Silicon is a chemical element that has atomic number 14 and is located in group 14 in the periodic table. Silicon has 23 recognized isotopes, with mass numbers from 22 to 44. The oldest lived radioisotope is Silicon-32, and its half-life has been examined to be around 150 years. Silicon-32 is formed in the atmosphere by cosmic ray spallation of argon and is released on the surface of the earth in precipitation.
From this we can conclude that the human digestive system does not produce enzymes that can break down cellulose. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that this is the answer that has come to your desired help.
Organic materials less than "50,000 years" old are the type of materials that scientists would date with the carbon-14 method.
Answer:
the answer is b. muscular walls of the arteries
Explanation:
the chances of that happening are 8/52 which reduces to 2/13. So not very good
