The organisms in the Cretaceous period and Permian Period are now extinct.
The emergence and demise of specific living forms are represented by time periods on the geologic time scale that span hundreds of millions of years. A mass extinction is a period of geologic time when a large number of plant and animal species go extinct, sometimes within a few thousand to a few million years.
Life has recovered after each of the five significant mass extinctions that have taken place during the past 500 million years. Because it led to the extinction of the dinosaurs, the mass extinction at the end of the Cretaceous Period is the most well-known. However, the Permian Period's end saw the most extreme one in terms of the number of species destroyed.
Know more about Cretaceous Period here
brainly.com/question/2093019
#SPJ1
Autism spectrum disorders are compared to Alzheimer's disease in terms of the major DSM-5 categories of mental disorders, and childhood disintegrative disorders are compared to pervasive developmental disorders.
A mental disorder is a condition that manifests as a clinically significant disturbance in a person's thinking, regulating emotions, or acting in a way that is inconsistent with the biological, and psychological processes that underlie mental functioning. Anxiety disorders, bipolar and associated disorders, feeding and eating disorders, depressive disorders, obsessive-compulsive and related disorders, and personality disorders are a few examples of categories in the DSM-5. The DSM-5 lists around 300 different mental illnesses. This manual is used by medical practitioners to recognize and classify mental disorders.
Learn more about Alzheimer's disease:
brainly.com/question/26431892
#SPJ4
By 1600, on which continents did Portugal claim or control territory or cities?
<span>Part of </span>South America<span> , </span>Africa<span> ,</span>Europe,Asia.
A check guaranteed by the bank is called a certified check.
