What has affected the honeybee population?

1. pesticides: that are sprayed on crops and flowers

2. global warming: warm winters have caused plants to shift their schedules. when the honey bees come out of hibernation, the flowers they need to feed on have already bloomed and died 

3. pathogens carried by mites weaken bees

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.