Answer: Elevated ridges of tissue, called gyri (singular: gyrus), separated by shallow groves called sulci (singular: sulcus) mark nearly the entire surface of the cerebral hemispheres.
When listing the levels of organization in organisms from smallest to most complex, "tissue" would be just below organs in complexity because organs are made of tissues.
Oviparity as well as having amniotic eggs can be found in birds as well as reptiles and amphibians. Mammals are also included along with insects as well. Hope these are correct and these will be of big help in this assignment.