Which until is used to measure sound intensity

Decibal (dB) is the unit

1 micro pascal {(μPa) = 10-6 Pa} – commonly used when measuring sound pressures.

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.