Answer: Botswana
Notes: The mass die-off of nearly 400 elephants in Botswana's Okavango Delta in 2020 was linked to climate change-induced toxic algal blooms. Researchers found that elephants drank from contaminated waterholes where cyanobacteria thrived due to a shift from a very dry year to an extremely wet one. This environmental change led to the proliferation of harmful toxins in stagnant water, resulting in the deaths of elephants across the region. The study emphasizes the need for monitoring water quality to prevent similar ecological disasters. Okavango Delta is located in Botswana. It is both UNESCO World Heritage Site and Ramsar Wetland.
