Is co2+4h2--> ch4 + 2h2o a combustion

Someone plzz me which of these defines a social search? a. asking a search engine a question that is answered by a real person on the other sideb. modifying search results based on popularity of a web pagec.modifying search results based on a ranking of a web page

You're programming an infinite loop. what must you include in your code to prevent crashes? in roblox

Along what line of action can the camera move to follow the movement of actors for screen direction? a. along a 90-degree arcb. along a 120-degree arcc. along a 180-degree arcd. along a 360-degree arc