Write the names of active ingredients and the medicinal uses of the following medicinal plants:
(i) Amla, (ii) Haldi, (iii) Tulsi, (iv) Neem.

(i) Amla
Active ingredients: Vitamin $C$
Uses: In fever, Diabetes, Asthma etc.
(ii) Haldi
Active ingredients: Curcumin
Uses: As an antiseptic and antibiotic. A headache, swelling of eyes etc.
(iii) Tulsi
Active ingredients: Cineole and Eugenol
Uses: In skin diseases ear pain, cough and cold etc.
(iv) Neem
Active ingredients: Nimbidine or Azadectirine
Uses: In skin diseases, piaria, malaria etc.