An expert in demography is asked to predict changes to the population size of a small country. Which data about the country would be most useful for the expert to analyze? Select three answers.
A population size
B. percentages of males and females
C. birthrate and death rate
D. age structure
E population distribution between urban and rural areas

What happens whenever a net force acts on an object

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.