The first box says Vaccine, Penicillin, Infections, and in the next box it says infectious, Antibiotic, Vaccination... Please help :)

Topographic maps are used to measure a-composition b-movement c-elevation d-texture

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .