The correct options are
A Seeds are sown at proper depth
B Seeds are sown at equal distances
C Seeds are protected from birds
D Aids in the process of weeding
A seed drill is a sowing device that sows the seeds at equal distances apart from each other and at a proper depth, ensuring that the seeds get covered with enough soil and are protected from being eaten by birds. Seed drills also aid in removing weeds at the sowing stage itself.