The speed of light in four different materials is shown below: material speed of light in thousand miles per second

a 140 b 78 c 186 d 124 which statement is correct?

1. material b is the least dense.

2. material c is the most dense.

3. material a is denser than material d.

4. material d is denser than material a.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

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)]