Hair viewed for forensic investigations is studied both macroscopically
and microscopically. Macroscopic observation might be done with a
while microscopic observation would be done with a
a) Microscope, electron microscope
b) Spectrophotometer, stereomicroscope
c) Stereomicroscope, compound microscope
d) All of the above

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

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)]

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves