Answer:
Major element
Explanation:
The six most common element are living thing carbon,hydrogen,oxygen,nitrogen,phosphorus and sulfur.
Answer :There was enough oxygen in the atmosphere to support a major burst of life on Earth
Explanation:
The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when there was enough oxygen in the atmosphere to support a major burst of life on Earth
For the first half of the Earht's history, there was no oxygen in the atmosphere. It was inhabited only by single-celled organisms.Of those simple life forms, the cyanobacteria may have. evolved a way to take energy from sunlight, and used it to make sugars out of water and carbon dioxide. They used the same chemical process we know as photosynthesis. This released vast quantities of oxygen into the atmosphere and triggered the evolution of complex life.
The type of protein that is often used to carry other molecules would be globular proteins. They <span>play many biological roles, including acting as enzymes, hormones, immunoglobulins, and transport molecules. Hope this answers the question.</span>
