1.- ¿Cuál es la unidad de medida de la Frecuencia de Onda?
A. Decibelios.
B. Metros.
C. Hertz.
be
D. Watt ​

C. Hertz

Explanation:

Que tenga un buen día :)

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

increases the risk of extinction 

explanation:

the answer is that if the species suffers from the disease, there is nothing stronger than the others, so it is possible to remove wholeness. an example of this is hunger in irish potatoes, which has a deadly disease bearish part of all potato harvest masses. pretty much ruins the land of crops.