What is the biggest disadvantage of using adult stem cells?

I would say that the biggest problem is that Adult stem cells already have a determined cell type and can't be changed into tissues that are not from the ones that they came from. The problem with that is that it limits the cells by making them unable to be used in procedures that don't include the same type of tissue that the stem cell came from. Hope this helps!

They can only be used to create specific types of cells medical terms and they are not very healthy

An ecosystem is in a certain area and includes living and non living plus there is weather conditions and a biome is a large amount of area with similar climate.so ecosystem is based on weather and biome is based on the average climate