Natural selection is Select one: a. based on the idea that conscious experience can be broken down into underlying thoughts. b. the idea that the observable environment affects behavior in predictable ways. c. the basis of evolution. d. how systems of rewards increase desired behaviors.

Sailors went to special school to learn how to use the new technology that would them sail far distences. the school we know about was

Which of the following statements concerning brazil since independence is not true? brazilians today can participate in politics through voting. brazil has been governed by dictators and elected officials. brazil became independent from portugal in 1822. brazil was the first country in the americas to end slavery.

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling