Answer:
• covers the body and makes up inner lining
• protects against damage, dust, bacteria
Explanation:
Eukaryotes have a nucleus (like animal cells) but prokaryotes do not have a nucleus (they are plant cells)
Answer:
neutral mutations
Explanation: i did this in class
Doppler effect works using sound waves as well as light waves. It is used in studying the motion of objects in the Universe such as galaxies, planets as well as the stars. If things are moving toward someone it means wavelengths are being shortened.
Sternocleidomastoid muscles.
Explanation:
The neck movements like flexion, rotation, extension, lateral rotation and flexion are carried out by neck muscles which include the sternocleidomastoid muscle,
The sternocleidomastoid muscle is a pair of muscle located superficially in the anterior neck.
The sternocleidomastoid muscles connects skull with the clavicle and hence is involved the head and neck motions.
The `bilateral contraction movements of sternocleidomastoid muscles aids in flexion of the neck and brings the chin down towards the breastbone.
Platysma is a facial muscle and involved in facial expressions and mandibular movements
Semispinalis muscle is in the posterior neck and maintains posture and head movements.
Trapezius muscles lies at the back of the head.