What are some characteristics of nervous tissue?

What are some possible short and long term medical concerns for crew members on longer space exploration trips

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

What percentage of light hits earth's surface directly?