निम्नलिखित में से कौन सा वृक्ष आमतौर पर उत्तराखंड राज्य के वन पारिस्थितिकी तंत्र में नहीं पाया जाता है?

Which tree species, introduced in the Thar Desert in 1958, is commonly known as Israeli Babul or Umbrella Thorn?

Which of the following birds, primarily found in the Thar region of Rajasthan, is the state bird of Rajasthan and classified as critically endangered?