Answer;
Gold
Gold is a non renewable resource.
Explanation;
Non renewable resources are those resources of economic value that can not be readily replaced by natural means on a level that is equivalent to its consumption.
Examples of non renewable resources include; fossil fuels such as oil, natural gas and coal; because their source is not sustainable.
Vaccines train our immune systems to create proteins that fight disease, known as antibodies’
Answer: A semi-permeable membrane is that which only allows certain
substances to pass through.