Why was the transition from purple bacteria to green bacteria important for the evolution of complex organisms

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

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?

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis