20 points & Brainliest! Propose a hypothesis to explain the sudden appearance of a species in a fossil record. Include what conditions are needed to preserve a fossil in your hypothesis.

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

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Amines amides and amino acids are categories of