Biochemical limestone is when the calcium carbonate is locked into the fossil shells and skeletons of marine organisms.
But chemical limestone is when the calcium carbonate is in the form of calcite mineral crystals.
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Answer: B if you are not in the 10th grade then you are not in high school
Explanation: Inverse:If not p then not q
B. Existing infrastructure was limited to white areas only. Hope this helps :)
Answer:
South america and Africa look like they fit with one another. The fact that they also have the same plant fossils provides more evidence. The plants can't just swim across the ocean to africa so they had to be connected at one point.
Explanation:
