Which diagram shows how much energy is used in each trophic level of a system

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel