RIO DE JANEIRO — When the smoke cleared, the Amazon could breathe easy again. …Now the rainy season had arrived, offering a respite to the jungle and a clearer view of the damage to the world. The picture that emerged was anything but reassuring. …It was the highest loss in Brazilian rainforest in a decade, and stark evidence of just how badly the Amazon, an important buffer against global warming, has fared in Brazil’s first year under President Jair Bolsonaro. He has vowed to open the rainforest to industry and scale back its protections, and his government has followed through, cutting funds and staffing to weaken the enforcement of environmental laws. In the absence of federal agents, waves of loggers, ranchers and miners moved in, emboldened by the president and eager to satisfy global demand.