Mass extinctionsa. are an example of 'uniformitarian' principles in geology b. are often triggered by magnetic field c. reversals occur at regularly spaced intervals in the geologic record d. denote a relatively sudden, global decrease in the diversity of life forms. e. are usually caused by a tsunami

d. denote a relatively sudden, global decrease in the diversity of life forms.

Explanation:

nobody can learn anything from that map without seeing it. indeed, we must take your word for it that you even have a map.

answercharacteristics of place include things like economic activity, architecture,and culture,all of which are human elements that alter or can be influenced by the environment;