What is one effects of malnutrition on the body's defense system?
a. the skin becomes thicker with more connective tissue.
b. physical barriers to invasion by microbes are increased.
c. the skin's sensitivity reaction to antigens is more rapid.
d. immune system organs decrease in size.
e. antibodies and immune cell numbers are increased?

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

Describe the two types of vascular tissue

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.