Answer:
A) Light pollution both attracts and repels migratory birds
In addition to the many hazards that exist in urban areas, cities typically lack the food resources and cover that birds need during migration or when raising their young. ... Darkening skies at night during migration season makes it easier for birds to navigate.
Explanation:
Migration carries high costs in predation and mortality, including from hunting by humans, and is driven primarily by availability of food. It occurs mainly in the northern hemisphere, where birds are funneled on to specific routes by natural barriers such as the Mediterranean Sea or the Caribbean Sea.
A. is your correct answer.
Answer:
1) A 2) C?
Explanation:
1)<em> Most tropical places lay around the equator </em>2) <em>Tundra's can get cool</em>
Polyadenylation is the addition of a poly(A) tail to a messenger RNA<span>. The poly(A) tail consists of ... RNAs are produced (transcribed) from a DNA </span>template<span>. ... </span>Polyadenylate polymerase<span> builds the poly(A) tail by adding adenosine monophosphate</span>
