Deficiency of vitamin A causes?

A) Loss of appetite

B) Night blindness

C) Thought infection

D) Both A and B

Who invented the telephone?

A) Samuel F.B. Morse

B) Alexander Graham Bell

C) Thomas Savery

D) Karl Benz

Study of plants is called?

A) Botany

B) Entomology

C) Biology

D) Anthropology