Hemoglobin is a natural compound found in blood
Both. Zinc can be found in nature and also can be manmade.
No. By definition a mineral is naturally occurring.
No, it is a naturally occurring petrochemical.
No. Lithium is a naturally occurring element.
Artificial means that it does not occur naturally. If something is artificial it is manmade.
No, it is manmade of stone and steel.
A dress is manmade. It is created by humans using a variety of materials such as fabric, thread, and embellishments. It is not naturally occurring in nature.
Not all the elements occur naturally; some elements are man-made.
Because they are formed naturally. Therefore they are not manmade.
some are to prevent erosion. but most are naturally formed
Mendelevium is a manmade element and does not occur naturally in nature. It is produced by bombarding einsteinium with alpha particles in a particle accelerator.
"Synthetic" could be another word for something that does not occur naturally.