Would it be better to use 5 or 50 rose plants in each group? Choose one answer.
a. Five
b. Fifty

Which event would lead to primary succession of a forest?

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

Why are human population trends difficult to predict?