Why animal cannot prepare their own food?
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Humans have to grow, hunt, and gather food, but many living things aren't so constrained. Plants, algae and many speciesof bacteria can make their ownsustenance through the process of photosynthesis. They harness sunlight to drive the chemical reactions in their bodies that produce sugars.
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Why bacteria caused tetanus
Tetanus is caused by an infection with thebacterium Clostridium tetani, which is commonly found in soil, saliva, dust, and manure. The bacteria generally enter through a break in the skin such as a cut or puncture wound by a contaminated object. ... Infection can be prevented by immunization with the tetanus vaccine
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Because animal cell does not contain pastid which are present in plants and these plastid contains chloroplast which contains chlorophyll.chlorophyll are the green pigment which involves in the process named as photosynthesis in plants.the process of photosynthesis take in required reactants prepaid food for plants .
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