if someone has pneumonia infection explain how this would affect the functioning of the circularly system

Circulatory system A pneumonia infection can spread from the lungs into the bloodstream. This is a serious complication. It can reach other major organs and result in organ damage or even death. The spread of bacteria through the blood is called bacteremia.

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Explanation:

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.