1. how would you design a controlled experiment to test the hypothesis that cat litter flushed down toilets might be killing southern sea otters? 2. Do you think there are environmental limits to...

1. how would you design a controlled experiment to test the hypothesis that cat litter flushed down toilets might be killing southern sea otters?

2. Do you think there are environmental limits to human population growth? explain. if so, how close do you think we are to such limits? explain.