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A well-sorted sandstone with ripple marks was most likely deposited as sand by a
Lancelets
Small, fish-like marine animals belonging to the subphylum Cephalochordata, known for their role as a model organism in evolutionary biology.
Nephridiopores
External openings of the nephridia, which are excretory organs in many invertebrates, allowing waste to exit the body.
Nephridia
Excretory organs in many invertebrates, including annelids and mollusks, that filter fluid directly from the body cavity.
Mollusks
A diverse group of invertebrate animals with a soft body, many of which have a hard shell, including snails, clams, and squid.
Q10: A polished surface produced by scraping of
Q10: The principal difference between a lahar and
Q13: Rocks resulting from shock metamorphism are likely
Q17: The primary difference between breccia and conglomerate
Q20: What type of extremism is future-oriented,seeking to
Q22: _ commonly serves as a protolith in
Q39: Why do deltas form?<br>A) because tidal currents
Q40: Why are earthquakes on continents most likely
Q44: If a body of magma becomes more
Q51: _ is/are an example of unconventional hydrocarbon