In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. a negative effect of these activities might
1. an increase in global warming
2. destruction of the ozone shield
3. a decrease in the average temperature of the atmosphere
4. an increase in biodiversity of the deforested areas

The answer is 1. an increase in global warming

1. when the tempature rises,your sweat glands and then springs into action making perspiration. some sweat evaporates with your skin taling heat with it.2.some of the blood pumped by the heart travels by your lungs to get rid of carbon dioxide and pick up oxygen.3.saliva produces by, you drinking water which saliva is 98% of. when mucus builds up in your body it also creates saliva as well as, antibacterial compunds.4.when the core body tempature drops, the shivering reflex is triggered to maintain homeostasis. for example: when you get out the pool you start to shiver because it is cold.