The relationship between acacia trees. The trees have thorns to house and sugar to feed the ants. The ants live in the thorns and run out to attack and bite any animal that tries to eat from the tree. Which type of symbiotic relationship is this an example of?

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

The economy of the united states is best described as

The widespread dominance of several foreign fast food chains and supermarkets in asia have changed the people’s?