Why didn't we are directly able to absorb energy from sunlight or any other source why our body need to perform different functions like ingestion , digestion , absorption , assimilation etc.?

Why didn't we are directly able to absorb energy from sunlight or any

1.	Why didn't we are directly able to absorb energy from sunlight or any other source why our body need to perform different functions like ingestion , digestion , absorption , assimilation etc.?
Answer» Why didn't we are directly able to absorb energy from sunlight or any other source why our body need to perform different functions like ingestion , digestion , absorption , assimilation etc.?