What is science?
a. a collection of accumulated knowledge.
b. the process of accumulating reliable knowledge.
c. none of these.
d. both of these.

B. The process of accumulating reliable knowledge.

Explanation:

Science is the collection of systematic reliable knowledge through the observations and the experiments. Science explains how the natural things work in the world. Science is an approach of understanding the natural phenomenon. Without the science life is impossible because science is present in everything that we go through everyday.                                                            

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)]