Which of the following is a positive use of technology to change the environment? a. The use of biological warfare on a monthly group of country.
b. The use of satellite imagery for GPS navigation.
c. The use of bigger saws to clear the rainforest for development.
d. The use of irrigation to bring water to outback.​

Explanation:

The answer is b. The use of satellite imagery for GPS navigation.

northern hill zone (nhz)

western himalayan regions of j& k (except jammu and kathua distt.); h.p. (except una and paonta valley); uttaranchal (except tarai area); sikkim and hills of west bengal and n.e. states

north western plains zone (nwpz)

punjab, haryana, delhi, rajasthan (except kota and udaipur divisions) and western up (except jhansi division), parts of j& k (jammu and kathua distt.) and parts of hp (una dist. and paonta valley) and uttaranchal (tarai region)