Answer: 550 million years ago according to the internet.
Explanation:
A controlled atmosphere is a system where food technicians control and manage the volume of oxygen and carbon dioxide in an environment. It is an important step in production processes and quality.
Food technicians are professionals involved in the production processes of foods and product quality.
These professionals (food technicians) maintain devices and equipment used during food control processes.
A controlled atmosphere is an important process for maintaining proper conditions for many foods.
Learn more about food technicians here:
brainly.com/question/20837842
<span>The esophagus runs behind the windpipe (trachea) and heart</span>
The most prominent roles of mitochondria<span> are to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP), through respiration, and to regulate cellular metabolism. The central set of reactions involved in ATP production are collectively known as the citric acid cycle, or the Krebs cycle</span>
Carrier rna is the answer