Answer:
This is a long one, are you sure you need help?
Explanation:
Answer: The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours.
Answer:
changes caused by harmful pathogens
Explanation:
The immune system is the body's defense system. It protects the body from things that can harm it such as bacteria, viruses, fungi, and toxins.
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Photosynthesis is like a recipe because of how it makes something grow. Think of backing a cake. It starts as a liquid batter, like cytoplasm and rises as it gets heat, like from the sun. Everything that you add into it builds the cake, like everything that makes up photo builds the flower.