By definition, a sympatric speciation is a biological process wherein the evolution of a certain species most likely comes from their single ancestral species. Its main difference from the allopatric speciation is that the evolution does not necessary require to be physical in nature, therefore, it is most likely to occur less frequent.
Because we can't take in light energy directly, we consume plants. Plants convert light energy into chemical energy through the process of photosynthesis. So when we eat plants, we get the chemical energy stored in the carbohydrates, which fuels all our physical activity.
The legislation authorized Medicine Chest be carried on every American Flag vessel of more than 150 tons back in the 1700's, so long as it had a crew of ten or more. A loose network of marine hospitals, primarily in port cities, was established by Congress to care for disabled and sick American merchant seamen around 1798. Federal entities, namely, the Marine Hospital Service, the Public Health and Marine Hospital Service, and lastly the Public Health Service continued to give healthcare to merchant seamen until 1981. The Medical Aid at Sea and Ship's Medicine Chest has been a part of much of this maritime history.
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Answer:
B
Explanation:
They altered rocks into soil that was able to support simple plants such as grasses. This is an example of altering the environment around them to make it more habitable for other species.
