Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
Answer:
D. A cube
Explanation:
Epithelium cells are a type of cell that has a simple cuboidal epithelium that consists of only a single layer of cells that are cube-like or cuboidal in shape. These cells have large, spherical nuclei present in the center. These cells are cube-shaped cells
2. club fungi
explanation:
Corn smut is caused by Ustilago maydis while wheat rust is caused by Puccinia triticina. Both Ustilago maydis and Puccinia triticina are classified under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia. Basidia are the site for the formation of basidiospores.
D because kg is mass and cubic cm is volume which Density = Mass / Volume
Answer: lymphatic circulatory; respiratory
Explanation:
The autonomic nervous system controls the internal body functions and responses which are not under the voluntary control. The functions control by the autonomous nervous system are heart rate, body fluid circulation, respiration, urination, sexual arousal and pupillary response.
The lymphatic system is one of the part of the circulatory system, it consists of a network of connected tubes called as lymphatic vessels. These vessels distribute the lymph fluid throughout the body. The lymph fluid consists of white blood cells which provide immunity against the pathogen.
The respiratory system is the system which controls the exchange of gases (Carbon dioxide and oxygen) between the body and the environment.
Both lymphatic circulation and respiration are the two functions controlled by the autonomic nervous system.
