Accommodation changes the size of the pupil and the lens curvature.

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Genetic drift and population size.

Young male Pacific Walruses on Cape Pierce in Alaska. Note the variation in the curvature and orient

Here are images of live zebrafish that were studied for genetics and head size to give insight into

Index of seed size and hardiness prior to, during, and after drought.

Lens of eye

Population size

Author Question: Accommodation changes the size of the pupil and the lens curvature. (Read 44 times)

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