The integumentary system is the skin. Skin protects the inner organs from Bactria. Essentially the skin is a wall protecting against the outside world. It doesn't really release anything but is just there for protection.
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Answer:
Natural selection can cause microevolution (change in allele frequencies).
Explanation:
With fitness-increasing alleles becoming more common in the population.
In the first stages of Alzheimer’s disease, the patient
affected may experience symptoms, such as memory loss of certain events. As the
time passes, the patient may experience long-term memory loses, the patient may
also revert into being a child. Patients who has been diagnose with Alzheimer’s
Disease are commonly diagnosis with pneumonia, which may lead to their death.
A mammals need for oxygen effects their heart rate because there could be some cases where they're in lack of oxygen causing them to be literally ' out of breath ' . Like climbing a mountain. The higher you go the less oxygen.
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A, bacterial conjugation
Explanation:
I think it's this because in step 4, the things under the oval-ish circle looks like bacteria
