Which of the following statements does not accurately describe stem cells?
a. the use of stem cells may allow scientist to use undifferentiated cells to repair or replace bad cells.
b. the use of stem cells is without any objections since it can be used in therapies to humans.
c. embryonic stem cells make up te inner cell mass of blastocyst .
d. adult stem cells are multipotent and can differentiate into types of cells .

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water