A group of giraffes feed on leaves from the treetops. Right now, the giraffes are not eating; the sun has gone down, leaving the grassland in darkness. What is happening
to the carbon in the trees and in the giraffes? Is carbon moving into the living things,
moving out of the living things, or both?
a) Carbon is moving into and out of the living things at the same time.
b) Carbon is only moving into the living things; it is not moving out of them.
c) Carbon is only moving out of the living things; it is not moving into them.
d) none of the above

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)]

so whats the answer

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

the answer is c. altitude. hope this ! #brainiac