The structure of the skeletal muscle helps it perform its function because i<span>ts striations allow for big movements.
Unlike smooth muscles which don't have much to do with movement and keeping your body together, skeletal muscles are made up of sarcomeres, which are a type of striations, which enable the skeletal muscle to move and keep your body in one place.
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The skin of the animal<span> is one of the first systems affected so it is the first indicator when an </span>animal becomes sick. The skin of an animal should be examined for signs of disease. Examined should be the structure and the <span>functioning of the skin. If there are some abnormalities it can be sign that the animal is sick. </span>
The sun rises in the east and the picture is in the west and the sun is there so the answer is evening
Biotic factors of an environment are simply anything alive in the environment. Grass, trees, animals, are all considered biotic. The fact that parasites often dont kill is irrelevant.