Question

1.why animals and human beings cannot make their own food using carbon dioxide and water​

Answer 1

Animals and humans cannot make food from carbon dioxide and water in the presence of sunlight as they are heterotrophic organisms and lack chlorophyll which is necessary to carry out photosynthesis. Chlorophyll is only present in plants and some bacteria, hence only they can make food from carbon dioxide, water and sunlight.

Answer 2

Answer:

Our body cannot prepare food due to the absence of chlorophyll pigment. ... Thus even presence of carbon dioxide, water or minerals in human body cannot allow to prepare food due to lack of chlorophyll pigments

Animals and humans cannot make food from carbon dioxide and water in the presence of sunlight as they are heterotrophic organisms and lack chlorophyll which is necessary to carry out photosynthesis.

Explanation:

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