3. Watch the same video again, this time with the researcher’s observations. How many of the behaviors were you able to identify? For each of the labeled behaviors, make a list of both the signal involved and the
senses involved in each signal. (How do Animals use Sound to Communicate

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare