Which of the following best describes how soil is formed? A.
by the load of sediments dumped along the shoreline by waves
B.
from weathered rocks and decomposed organic material
C.
by the pressure of rocks lying above a rock layer
D.
from the accumulation of sand from the surrounding region

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

What does x represent in the formula for the compound xcl4?