Final answer:
The estimated loss of tropical forest between 1990 and 2005 is true.
Step-by-step explanation:
The statement is true. According to the information provided, the estimated loss of tropical forest between 1990 and 2005 was significant. More than half of the world's tropical rainforests have been destroyed, and it has been estimated that 80-90% of tropical rainforest ecosystems will be destroyed by 2020 if deforestation continues at current rates.