Identify the statements which are not true for the natural ecosystem. (A) Grassland and desert are examples of terrestrial ecosystem.(B) Oceans and rivers are man-made ecosystems.(C) Wetland and estuary are examples of aquatic ecosystem.(D) Crop fields and aquarium are natural ecosystems  Choose the correct answer from the options given below :( – Answer & Explanation | CUET Subject PYQ – Dubuddy