He finds<span> that in</span>addition<span> to the </span>ruby-red color<span>, </span>there<span> are </span>also pink<span>, </span>orange, and yellowbacteria<span>.</span>
Its D. Sexual reproduction
<span>B. respiratory and circulatory
When oxygen is inhaled it is then brought to the lungs. It soon goes through a series of steps which guide's the oxygen (which are now molecules) to the blood. The blood then takes the oxygen molecules through out the body, so now those molecules are spread through out the body.
Hoped I helped!
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Answer:
B. evolutionary relationships.
Explanation:
Systematics is biological study of the relationships among living things through time. It is used to understand the evolutionary history of life. Usually, relationships among organisms are presented and vizualized through the evolutionary trees. Branching of the tree shows group relationships while branch length shows amount of evolution.