El adn presente en una determinada especie bacteriana posee, sobre el total de bases nitrogenadas, un 18 % de citosina. Calcula el porcentaje de las restantes bases nitrogenadas presentes en el adn de esa bacteria

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

How many types of rock can form from the rock cycle