Meaning of experiment is A-controlled observation.
Part A: D
Part B: A
Phones should be allowed in classrooms because it can help educate a student by helping them figure out a response for a question. Take photos to remember math homework or work from class
Answer:
The formal letter is written for business or professional purposes with a specific objective in mind. It uses simple language, that can be easy to read and interpret. On the contrary, informal letters are written to friends and relative for personal communication and uses a casual or an emotional tone
Answer:
Barack obama issued 5 warnings about US democracy
Explanation:
