Which technological tool helps earth scientists gain new knowledge about earth’s subsurface? Group of answer choices.

A. Global positioning system

B. Digital balance

C. Ground penetrating radar

G. Hydrometer

ground penetrating radar

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]