During an earthquake, scientists at a seismic station observed that some waves were detected earlier than others. What is the likely cause of this observation? I will MARK BRAINLIEST

A foreshock is an mild earthquake or a tremor that occurs before a larger seismic event (the mainshock) and is related to it in both time and space.

Explanation:

The cascade model, suggests that foreshocks are ordinary earthquakes that travel along a fault, one quake triggering another one nearby.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.