Primitive Man is a fairly broad definition but generally any contributions need to be limited to approximately the past 24,000 years. Man's earliest contributions to science can be found after man no longer might be considered primitive, at 12,000 years ago,
Some Metallurgy, copper and gold, also showed up around the world around 7,000 or 8,000 BCE, which certainly may be called scientific contribution.
Basic concepts of numbers, distances, calendars, moon cycles, years, and etc were being formulated, all basic concepts required by early science.
The Egyptians and Middle/South Americans built somewhat similar pyramids at about the same time which indicates a level of scientific study. The Ancient Egyptians and Greeks studied astronomy, and the Ancient Mayans also studied astronomy at about the same time.
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he told that science is science and sciance cannot be science if sceince if science is not science and if science did not come from science the science will not be science
invented a synthetic cell
A contribution is the act of giving something in order to help achieve or bring about some result.
Hooke's law of Elasticity.
The fungal fish recorder.