Answer: Host
Explanation:
The living organism that helps provide nutrients to another organism inside is the host.
A host is simply refered to as a larger organism which keeps a smaller organism and then provides the organism with shelter and nourishment.
Examples of host include a dog that has fleas on it. The dog keeps the flea and provide it with nutrient.
The Corpus Callosum is what joins the two hemispheres of the brain.Hope that helps .
A mix of both. You'd need both healthy fish and chicken, because I believe chicken provides iron? I'm not sure, and fish is important to your diet as well.