What evidence supports land at one point being covered by ocean

The answer is; the presence of diatomaceous earth in the soil.

This means that diatoms existed in the region. Diatoms are silicified microalgae that exist in oceans, brackish waters, even in freshwaters. They divide vegetatively and in large numbers. When they die, they fall off (precipiate) to the ocean beds and accumulate with sediment to form diatomaceous earth over time.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.