It was in 1979. By Um Bunrith, BBU student in Preah Sihanouk Province
when agriculture became popular throughout the major river valley civilizations
Pesticides are a major threat to amphibians.
CFC's are a major threat to ozone. They react with ozone to deplete it.
Hannibal was not the major foreign threat to Rome, although he was a major threat at his time. The Romans also had threts from the Gauls, Germans, Parthians, Panonians, and the Dacians, to name a few.
It would be difficult to determine the "biggest" threat to kiwi. Major threats are introduced animals such as dogs, cats and stoats. However, were it not for habitat loss, these animals would not be such a major threat.
Malaria is indeed a significant health threat in southern Africa, particularly in rural areas where transmission rates are high. However, while it poses serious health challenges, other factors such as HIV/AIDS, tuberculosis, and malnutrition also contribute to the overall health burden in the region. Efforts to combat malaria, including increased access to prevention and treatment, have shown progress, but it remains a critical public health concern alongside other diseases. Thus, while malaria is a major threat, it is part of a broader spectrum of health issues facing southern Africa.
Pollution describes a major threat to natural resource ecosystems, affecting air and water quality, as well as wildlife habitats. Soil can also be threatened by erosion, degradation, and contamination, impacting the health of ecosystems and their ability to support plant and animal life.
The major threat towards humpback whales would be human disturbances.
Xiongnu
The 3 major types of health is Emotional Health, Social Health, and Physical Health.
a protsetant rebellion in Spain
Habitat degradation is the major threat to the sand cat. Vulnerable arid ecosystems are being rapidly degraded by human settlement and activity, especially livestock grazing.