The most common and obvious fossils are the preserved skeletal remains of animals. Other fossils, which are also evidence of past organisms, include leaf impressions, tracks and trails, burrows, droppings, and root casts.
Lesson Summary. Non-experimental research does not mean nonscientific. Non-experimental research means there is a predictor variable or group of subjects that cannot be manipulated by the experimenter. Typically, this means that other routes must be used to draw conclusions, such as correlation, survey or case study.
The innovative of the scientific research covers five levels which is sorted by the creativity extent : innovation with a new field , innovation with a new branch of a certain field ( new direction ) , innovation with a certain subject in a branch , innovation with the reinforcement and development of the original skills in a certain subject , ...