In the early stages the embryos of four different species will look the same .For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth. That what makes them different.
Answer:
An arterie is a vessel that carries blood away from the heart, and a vein carries blood to the heart
Explanation:
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The answer is jackrabbits
Answer:
They are heterotrophs because their food is made by other organisms.
Explanation:
Unless the organism can create their food independently via photosynthesis or chemosynthesis, they must get their food from elswehere.
In the case of mushrooms, they are scavengers/decomposers, meaning they consume energy from once living organisms, thus classifying them as heterotrophs.
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