Answer:
Positives -
- There becomes a higher consumption of certain foods and drinks (a boom-time for ice-cream and cold drinks)
- Domestic tourism is having a boon with "stay-cations"
- Measured industrial output rises, hence GDP rises, because of increased use of electricity
Negatives -
- Heatwaves can cause a surge of dry weather. This could lead to Droughts and could have a negative impact on locals. Crops for farmers could dry out, and there could become a lack of vegetation (for animals too).
- Higher death rate for people with certain conditions (e.g. more heart attacks, especially among-st elderly people)
- Reduced numbers for certain forms of entertainment (ie cinema etc)