Answer:
arthropoda : invertebrate
mollusca : invertebrate
chordata : vertebrate
Explanation:
There are 9 in total but those are the main 3
The stage that scientists begin to ask questions and attempt to explain observations is A. forming hypotheses. This is because a hypothesis is basically a testable question about observations scientists make.
The Gutenberg Bible was the first major book printed using mass-produced movable metal type in Europe.
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This occurs during protein synthesis. This is because the cell continues to protein synthesise, therefore adding to the amount of cells.
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None of the above... Ingumentary system is the one that regulates body temperature. The ingumentary system is skin, hair , sweat glands and nails
