Answer:
Musculoskeletal System is the system of the body which perform the important function of the body like helps in the movement of the body, provide the shape and support to the body.
The system is formed by two different systems of the body which are the skeletal system and the muscular system.
The skeletal system protects the internal structure of the body but the muscular system which are attached to the skeletal system and increases the efficiency of the functions performed by the skeletal and muscular system. Both of this system work together to perform the same functions.
The Precambrian is the earliest era. It is followed by the Paleozoic, when multi-cellular life first flourished on earth After that came the Mesozoic - 'middle life' - the era before the current one which is the Cenozoic. Note that the Paleozoic, Mesozoic and Cenozoic are all part of the Phanerozoic Eon.
Stage 1 which is the high fluctuating stage has both high birth rates and high death rates.
<h3>What is Famine?</h3>
This is a condition which is characterized by lack of food as a result of some factors such as war, natural disaster etc.
In the stage 1, the population growth is slow and fluctuating as a result of high incidences of disease and famine.
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Insects, and some other invertebrates, exchange oxygen and carbon dioxide between their tissues and the air by a system of air-filled tubes called tracheae. Tracheae open to the outside through small holes called spiracles.
Monosaccharides are the building blocks (or monomer) of the macromolecule (or polymer) carbohydrates.