Answer:
The influx of which ion is directly responsible for triggering the release of acetylcholine from a motor neuron? When an action potential from a neuron reaches an axon terminal, voltage-gated calcium channels open. The influx of calcium triggers exocytosis of acetylcholine.
The carrying capacity is the size of a population that can live indefinitely using the resources available where that population lives. <span> If </span>carrying capacity<span> is exceeded, the </span>population<span> declines because </span>its<span> environment can no longer support the excess numbers. Hope this helps.</span>
b.
The definition of evolution is the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
Respuesta:
B. pastoreo excesivo de animales de granja
Porque son lugares secos.
Explicación:
Las políticas e infraestructuras que promueven la agricultura en las tierras de pastoreo que no pueden mantener sistemas viables de cultivo, contribuyen a la desertificación. La mayoría de las áreas de tierras secas (el 65%) son tierras de pastoreo que son más adecuadas para el pastoreo sostenible que para el cultivo.