What three things might influence a slide when conditions are right?

Three key factors that might influence a slide when conditions are right include the slope's angle, which affects gravitational pull; soil saturation from rain or melting snow, which can weaken soil cohesion; and the presence of vegetation, as roots can stabilize soil but may also be removed or weakened by environmental changes. Additionally, human activities such as construction or deforestation can destabilize slopes, increasing the risk of slides.