The answer is.d. stromatolites hope it help
The question does not make sense please type in comments and tell me
An element's atomic number is the amount of protons (positively charge subatomic particle found in the atoms nucleus) present in one atom of that element.
Homeostasis is the maintenance of a stable internal environment. Homeostasis is a term coined to describe the physical and chemical parameters that an organism must maintain to allow proper functioning of its component cells, tissues, organs, and organ systems.
