How do autotrophs obtain CO2 and N2 to make their own food?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Which of the following is a common response to cell signaling?

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d