Describe cómo cambiaría con el tiempo el área montañosa y la cuenca sedimentaria si solo actuarán los procesos externos

Providing immunity by injecting the body with a weakened form a pathogen is known as

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

How does a gymnosperm prevent itself from pollinating the same tree