Which of the following parts of decomposing living organisms are usually not preserved as fossils?
bones
skin and organs
teeth and spines
shells

What is the most stable monatomic ion formed from nitrogen

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need