Living systems are made of complex molecules including carbohydrates fats proteins and nuclei caucused. even though there are more than 100 elements known to exist, these molecules are comprised of only a few elements what are these elements? a. sodium potassium calcium nitrogen phosphorus sulfur b. carbon hydrogen oxygen nitrogen sulfur and phosphorus c. carbon hydrogen oxygen fluorine chlorine iodine d. fluorine chlorine iodine nitrogen phosphorus sulfur

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