Scientists establish the age of a rock or fossil based on natural radioactive decay and certain elements such as potassium and carbon, this is used to make reliable “clocks” to date ancient events.
(Sorry if not all is accurate hope it helps)
provide the barrier that marks the boundaries of a cell.
Water is the most abundant molecule in the Earth’s atmosphere is false.
Fats and Proteins can be used as a supplement for energy if sugar is not available.
Hope I helped :) <span />
The typical cell types found in connective tissue: fibroblast Mast cells plasma cells macrophages, adipocytes leukocytes
