HELP ASAR Why are individuals in many developing countries susceptible to diseases such as polio and pertussis? A. because of poor hygiene
B. because of genetic variation
C. because of a lack of vaccination
D. because of a lack of education

What is true of sea slugs in these orders

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.