Viruses are considered to be nonliving because they
a. cannot multiply.
b. use energy to grow.
c. are smaller than bacteria.
d. do not show all the characteristics of life.

Explain which dri value would you use to make sure that the vitamin supplement that you use does not contain too much vitamin a

Patrick’s parents are worried that he may face discrimination in his new neighborhood. which factor is most likely to cause worry to his parents? a. patrick has unusual pets at home. b. patrick belongs to a different culture than that of the majority group. c. both patrick’s parents hold jobs outside the home. d. patrick likes a particular sport.

What is a common risk associated with tobacco?