¿Qué producto de exportación fue la principal fuente de Explica si hubo beneficio o no con la producción cafetalera en divisas en las primeras tres décadas del siglo XX? las zonas
alejadas:

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

Describe how viruses and bacteria can be used as biological weapons. what are some of the potential threats and potential benefits? do you agree with the use of viruses and bacteria as biological weapons? why or why not?