<span>The chaparral is characterized by sparse, rough terrain and nutrient-poor soil meaning that no single resource is overly abundant. Therefore, a varied diet allows an animal to make use of a wider selection of the resources that are available to it and thereby thrive.</span>
Chemical digestion involves breaking down the nutrients into smaller cells
Physical digestion is using physical movements such as chewing and swallowing
The peripheral nervous system is made up of two systems; the somatic nervous system controls muscle movement and the autonomic nervous system connects with internal organs.
About half of a body’s weight is muscle. Muscle tissue is of three distinct types: skeletal, cardiac, and smooth. Each type has a unique structure and a specific role. Skeletal muscle<span> moves bones. </span>Cardiac muscle<span> contracts the heart to pump blood. The </span>smooth muscle<span> tissue that changes shape to facilitate bodily functions of intestine and bladder. Here are more details about the structure and function of each type of muscle tissue in the human muscular system. </span>
According to the Doppler effect, the sound of a police car siren is louder and high pitched as it approaches the observer.
