Answer:
Arteries are the vessels that will be the first to contact the blood from the ventricles. Arteries are blood vessel that transports blood from the heart to other parts of the body such as lungs and tissues.Explanation:
Cyanobacteria were very simple organisms and performed were an role in changing Earth's early atmosphere. They carried out photosynthesis to produce the materials they needed to grow. In this process, they release Oxygen which is needed to sustain life on Earth for Humans and other organisms.
An isotope of the element.
