Which is an example of how stem cells are currently being used? for generating healthy cells to form replacement organs like brains for directing differentiation to treat diabetes and arthritis for testing for possible side effects of a new cancer medication for curing heart disease by regenerating damaged heart tissue

Curing heart disease by regenerating damaged heart tissue.

for curing heart disease by regenerating damaged heart tissue

Stem cells are commonly used for the tissue repair process and they have the potentials to develop into different cells type in the body during early life and growth. Thus, stem cells in many tissues can function as internal repair system by dividing essentially without limit to replenish other cells as long as the person or animal is still alive. Furthermore, they mediates diverse role in disease progression, development and tissue repair processes in host.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

i believe the answer would be b. hope it : )