Answer:
A
Explanation:
Organisms on Earth use nitrogen to build proteins necessary for cell
development.
I think the correct answer from the choices listed above is option C. <span>In the statement above, Pb-206 is known as the daughter while U-238 is the parent. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
The stomach has a pH between 1.5 and 3.5 generally and this is due to the cells in the stomach releasing hydrochloric acid.
Explanation:
So as cells in the intestines gradually release more and more sodium bicarbonate, the pH raises from around 1 to around 7. Answer 2: The stomach usually has a pH of 2 or 3
Answer:
Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. .