I believe it’s B or D sorry I’m not 100% sure
        
             
        
        
        
Answer: D
Explanation:
Because the heavy plow and its traction team was expensive tool and individual peasant farmers were not able to own it, it brought collective ownership and patterns of communal agriculture and communal animal husbandry.
The heavy plough required more energy to pull this resulted several families coming together to pool their oxen to form a team large and strong enough to pull the heavy plow. The resulting “ox-gangs” became an important social group.
 
        
             
        
        
        
Answer:
Sponge; Radial Symmetry; Endoskeleton; Absent Appendages; Absent Segmentation
Cnidarians; Radial Symmetry; No Skeleton; Non-Jointed Appendages; Absent Segmentation
Roundworms; Radial Symmetry; No skeleton; Absent Appendages; Absent Segmentation
Annelids; Radial Symmetry; No skeleton; Absent Appendages; Present Segmentation
Mollusks; Bilateral Symmetry; Exoskeleton; Non-Jointed Appendages; Absent Segmentation
Arthropods; Bilateral Symmetry; Exoskeleton; Jointed Appendages; Present Segmentation
Echinoderms; Bilateral Symmetry; Endoskeleton; Non-Jointed Appendages; Absent Segmentation
Vertebrates; Bilateral Symmetry; Endoskeleton; Jointed Appendages; Absent Segmentation
 
        
             
        
        
        
Answer: chlorophyll 
Explanation: the green color compound present in the leaf is chlorophyll. Chlorophyll is a chemical or a molecule that is present within the chloroplast of the leaf.
This compound is responsible for the conversion of carbon dioxide and water with the help of light energy of the sun into sugars. And plant prepares its food through this chemical compound. This process is known as photosynthesis.
 
        
             
        
        
        
Nose, Mouth, Pharynx, Larynx, Trachea, Bronchi, Bronchioles, Lungs, Alveoli.