Answer:
Muscles connect to your skeleton and they contract and move the skeleton along. Your skeletal system is made up of cartilage and calcified bone that work together. They help the process of movement happen in a smoother manner. The calcified bones of your skeleton also work with the circulatory system.
 
        
                    
             
        
        
        
The answer is B
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Large brain size, small and flat face, small jaws and teeth, exploitation of diversity are some common features of <em>homo </em>species. <em>Different</em><em> </em><em>homo </em>species have different shapes of skulls. 
Homo, genus of the family Hominidae (order Primates), is distinguished by a relatively large cranial capacity, limb structure adapted to a habitual erect posture and a bipedal gait, well-developed and fully opposable thumbs, hands capable of power and precision grips, and the ability to make standardized precision tools by combining one tool with another.
<em>Different </em><em>Homo </em>species are differentiate from skull shapes. Their body shapes also tends to vary. This is due to different environment conditions in different time zones.
However,<em> Homo</em> species show many common characteristics such as Large brain size, small and flat face, small jaws and teeth. 
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To learn more about <em>Homo</em> species follow this link:
brainly.com/question/10169640?referrer=searchResults
 
        
             
        
        
        
The correct answer is (B)  chemosynthesis and marine snow  are the two ways that organisms on the bottom of  deep sea food chains acquire energy.
What is the meaning of chemosynthesis and marine show?
Chemosynthesis is the utilization of energy supplied by inorganic chemical processes to make food in bacteria and other organisms. To generate a sugar, all chemosynthetic organisms require energy provided by chemical processes, although various species employ different methods.
Marine snow is a shower of biological particles that falls from the upper ocean to the deep sea.   Marine snow refers to biological material that descends from higher in the water column. Some flakes fall for several weeks before reaching the ocean floor.
Learn more about chemosynthesis and marine snow refer:
brainly.com/question/4821668
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It has the same origin as other connective tissues and it connects all the body systems together.