What is the role of ministry of labour for foreign employment

The idea that desirable traits can be bred into human beings and undesirable ones can be bred out is known as:

What trade did europeans want most before the 1800s ivory wood slaves gold

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