Answer:
Cardivovascar disease & Mouth cancer
Explanation:
Even if chewing tobacco is more safer it can still have defeats like strokes ,, heart disease ,, high blood pressure ,, and so on so on ,, even cancer in certain parts of the mouth
Answer:
The scientist was Ivan Pavlov
Explanation:
He was a Russian scientist, who performed multiple research on dogs. He is best know for his experiments in classical conditioning.
Conception is Human fertilization
