Answer:
by mutations in regulatory DNA over time
A teaspoon of good farm soil contains up to 1 billion bacteria in more than 4000 species. Soil is the skin of the earth. Soils are alive they are born, they age, they breathe. Good luck!
A Vocational and Trade school is where students are trained in order to focus on developing skills specific to an occupation.
Vocational and Trade schools are distinguised from the usual tertiary level of education like courses offered in Universitiesa and Colleges. This is due to the fact that these schools focus more on an occupation-specific set of skills rather than focusing on the theories behind it. Simply speaking, vocational and trade schools are for developing technical skills only. Rather than pursuing a professional discipline, these schools focus only on one trade for a specific job. The aim of the students of a Vocational school is to directly enter into the workforce rather than preparing for tertiary education, in terms of it being compared to secondary education.
After finishing vocational schools, the graduates enter the work force directly and labelled as blue-collared workers. These refer to performing manual labor as opposed to white-collared jobs which is associated with office work or professional occupations.
The answer would be A bc the answer is A
