[Solved] "The present is the key to the past" is the uniformitarian concept that______ . A) the rates of geologic processes (erosion, sedimentation, volcanism) are invariant B) geologic processes give rise to the same types of products and features C) each mountain that is eroding today to produce river sediment has always done so D) rivers, seas, mountains, etc. are perpetual features of an unchanging landscape Threats: Expressions of intent to cause harm or damage, creating a sense of fear or danger. Force: Force is a physical quantity that can cause an object with mass to change its velocity, including to begin moving from a state of rest. Paraphilias: Unusual or atypical sexual preferences or behaviors that are beyond the norm of typical erotic activities. Paraphilic Disorders: Psychological disorders characterized by intense sexual fantasies, urges, or behaviors involving non-normative targets, situations, or activities that cause distress or impairment.