... may have been among a first kinds of music 29 The thin outer layer of the skin is called the epidermis, while the layer inner, which is slightly thicker, is called the dermis 30 With the incorporation ... jigsaw puzzle depends the number of pieces, their shapes and shadings, and the design of the picture 25 Plants range in size to tiny, single-celled, blue-green algae, invisible to the naked eye, to ... as is known 11 The growth of psychobiology owes to major conceptual advances in the way people think about the brain (A) much (B) as much as (C) much which (D) there is so much 12 In 1938 Pearl...