Which statement about contour lines is true? a. they can never cross. b. they are always parallel. c. they indicate a flat area when drawn together. d. they signify where mineral deposits can be found.

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.

Which of the following are guidelines to follow for obtaining accurate observations