Answer:
D. Ethnic background has no relevance to body fat levels.
Explanation:
Honestly, no matter what Ethnicity we are, we are human beings. Hope this helps! :)
Answer:
D. Immune response
Explanation:
An immune response is defined as any reaction that occurs within a host when its body recognizes and defends itself against pathogenic microorganisms (e.g., viruses, bacteria, protists, etc) and/or chemical compounds that look to be foreign and harmful to the body. When the number of detected pathogenic microorganisms increases, the immune system in the host responds by producing cells that attack them or by producing proteins (i.e., antibodies) that destroy the harmful substances. A substance capable of triggering an immune response is known as an antigen (e.g., a structural protein of a pathogenic virus). There are two distinct types of immune responses: 1-innate immune responses, where the body mounts a response immediately without requiring a previous contact with the harmful antigen and does not retain a memory of previous responses; and 2- adaptive immune responses that only occur after exposure to an antigen, these responses are slower but they are specific and produce immunological memory.
Answer:
Someone whose job involves manual labor would have noticeably larger and stronger upper body bones because it has adapted to the everyday activities every day. That is to say, that the body has become larger and stronger to perform the tasks efficiently.
Explanation:
The body adapts itself to our activities. If our job does not involve manual labor, our upper body does not need to have noticeably large and stronger upper body bones. Since it is not manipulating heavy things or moving constantly, there is not an external factor that shapes it this way. Besides, the constant physical work will shape the body to do the job more efficiently and without damaging it.
