Your body can form antibodies [which is a protein] from the immune system to attack harmful viruses.
The answer would be the second option. The best reason for doing more background research after making an observation and before forming a hypothesis is to prevent making the same mistakes made in a prior experiment. It is to make sure that you are able to see the problems of a research and make an experimental design that will minimize the errors.
Answer:
food molecule is lipids
Explanation:
fatty acids is the end product of lipids
An autotroph or primary producer is an organism that produces complex organic compounds using carbon from simple substances such as carbon dioxide, generally using energy from light or inorganic chemical reactions.
A heterotroph is an organism that eats other plants or animals for energy and nutrients. The term stems from the Greek words hetero for “other” and trophe for “nourishment.”
Answer:
the immune system works with the circulatory system for transportation needs and the lymphatic system for production of lymphocytes.