Which of the following is not one of the ways that weathered nutrients can return to an ecosystem's environment? 1.dissolved in water. 2.released into the atmosphere as a gas. 3.taken from the soil by plants. 4.taken from plants by animals.

The answer is 4 i don't know if its right let me see.

Ido not understand. 

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.