Cyanobacteria also known as one of the first organism on earth are responsible for producing nearly 80% of the oxygen on earth.
The nervous system helps:
Receptors in muscles provide the brain with information about body position and movement.
The brain controls the contraction of skeletal muscle.
The nervous system regulates the speed at which food moves through the digestive tract.
The nervous system regulates respiratory rate
The nervous system regulates heart rate and blood pressure.
Source: https://faculty.washington.edu/chudler/organ.html
The answer is C. solid iron and nickel
Both phenotypes will be shown.
Naturally ocurring, solid,inorganic, Crystal shape, and definite chemical composition.
