Q: Does "For most land-birds, such barriers could consist in seas, large water bodies or high mountain ranges, because of the lack of stopover or feeding sites, or the lack of thermal columns for broad-winged birds." provide a valid answer to "Why do migrating land birds avoid large water bodies or mountain ranges?"?
A: yes

Q: Does "In a review Alexander Macfarlane wrote: "The main idea of the work is not unification of the several methods, nor generalization of ordinary algebra so as to include them, but rather the comparative study of their several structures."" provide a valid answer to "Lie algebras and hypobolic quanternions drew attention to the need for what?"?
A: no

Q: Does "In this way the idea of race as we understand it today came about during the historical process of exploration and conquest which brought Europeans into contact with groups from different continents, and of the ideology of classification and typology found in the natural sciences." provide a valid answer to "Where did Europeans come into contact with other groups?"?
A: yes

Q: Does "The Marshall Islands was admitted to the United Nations based on the Security Council's recommendation on August 9, 1991, in Resolution 704 and the General Assembly's approval on September 17, 1991, in Resolution 46/3." provide a valid answer to "When did the UN General Assembly approve the Marshall Islands joining the UN?"?
A:
yes