a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Answer:
Stratified squamous epithelium
Explanation:
Most animals, including humans, have stratified squamous epithelium in their esophagus. It may include keratin, which gives an extra layer of protection, allowing them to eat bigger and less chewed food. It should be noted that the esophagus has a mucous membrane and because of the muscular layers, called muscularis mucosae, the food can pass rapidly through it preventing damages in its layers due to coarser or abrasive food.
Answer:
These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). This two-way cause and effect relationship between an event and a sphere is called an interaction.
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Answer:
-1
Explanation:
There are more electrons, which are negatively charged. However, there is only one more electron then proton, therefore, -1.
