Plants have these because root nodules<span> are formed when nitrogen fixing bacteria called "rhizobia" start to enter the cells of a host </span>plant<span>. Rhizobia normally live inside of the soil and they </span>can<span> exist without a host </span>plant<span>.</span>
The countries currently on stage 4 of demographic transition model are.. Argentina, Australia, Canada, China, Brazil, Singapore, South Korea, U.S. , and most of Europe.
Answer: Their population will rapidly decrease in till eventually they are no longer.
Explanation: Due to having less and less area to nest, the costal bird species population will slowly start to decline.
Answer:
Champaran district in Bihar.
Explanation:
