Scientists are still unsure why we haven't seen extraterrestrial life. In your scientific opinion, why has
humanity not yet made contact with aliens? Answer in a complete paragraph. Explain your reasoning.

Not enough resources to do so.

Explanation:

I believe that we could in the future but right now we haven't found a planet capable of supporting human life such as Earth does. I'm sure there is other life out there but we don't have the resources to communicate or discover them.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

b because they naturally adapt to their environment plz mark brainliest

explanation: