Which term refers to body tissues that provide protection against bacteria, viruses, and other harmful substances?
1.antioxidants
2.free radicals
3.immune system
4.lymphatic system
3
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Shortened cakes are usually
A. left in the oven for approximately 5 to 10 minutes after the oven is turned off to allow them to rest. B. cooled on a rack for 20 to 30 minutes. C. removed from the cake pan before they are completely cool. D. All of these are correct.
A Biological or physical vehicle that carries an agent to a host represents a:
A) vector. B) host. C) pathogen. D) lymphocyte.
An extreme shortage of food with chronic hunger is termed
A. nutrition insecurity. B. famine. C. muscle wasting. D. food insecurity.
Vitamin A affects our vision in two ways: it enables us to react to changes in brightness, and it
A) supports the development of eye functioning in fetuses. B) enables us to see different colors. C) supports eye functioning later in life. D) enables us to focus on distant objects.