Both aerobic and anaerobic bacteria can cause infections in people, generally in environments that enable the bacteria to thrive. which statement identifies the most likely infections? a. aerobic bacteria cause an infection on the surface of the brain, and anaerobic bacteria cause an infection in bone marrow. b. aerobic bacteria cause an infection in the stomach, and anaerobic bacteria cause an infection in the liver. c. aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle. d. aerobic bacteria cause an infection in the kidney, and anaerobic bacteria cause an infection in the appendix.

C. Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle.

Explanation:

Aerobic bacteria need an oxygen-rich environment in order to thrive and cause infections. Such bacteria will not be able to survive in oxygen-deficient environment, let alone cause infection. On the other hand, anaerobic bacteria will thrive and be able to cause infection in oxygen-deficient environment and find it difficult to survive in oxygenated ones.

The surface of the skin is an oxygen-rich environment, a suitable habitat for bacteria to grow an be able to cause infections. The heart muscle environment is anaerobic and will only be suitable for anaerobic bacteria to thrive and be able to cause infections.

Hence, the correct option is C.

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explanation:

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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