Is the use of sound waves to detect and measure objects underwater.

a. ostm
b. sonar
c. gis
d. gps

this is actually earth science. sorry.

Metamorphic rocks are formed when sedimentary or igneous rocks are subjected to heat or pressure and recrystallize without melting. which of the following rocks results from the metamorphism of limestone? a. granite b. slate c. sandstone d. marble

What are the four basic classes of organic molecules how do they differ structurally and functionally

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called