1. Harmful Algal blooms are a major environmental problem in all 50 states

2. The Greenhouse Effect is now the e world's most pressing environmental problem.

3. Thus, Biomining is, economically sound hydrometallurgical process with lesser environmental problem than conventional commercial application

4. In France, 500,000 tons of old tires are scrapped yearly, creating a serious environmental problem.

5. The most serious and pervasive environmental problem related to mining waste is acid drainage (AD).

6. Biofouling mediated by Byssus adhesion in invasive bivalves has become a global environmental problem in aquatic ecosystems, resulting in negative ecological and economic consequences

7. Biofouling mediated by Byssus adhesion in invasive bivalves has become a global environmental problem in aquatic ecosystems, resulting in negative ecological and economic consequences

8. 5.3.4.1 Acid Mine Drainage Acid runoff generated by the mining of deposits containing sulphide minerals is the industry’s most serious long-term environmental problem, and the gold sector is particularly affected.

9. 5.3.4.1 Acid Mine Drainage Acid runoff generated by the mining of deposits containing sulphide minerals is the industry's most serious long-term environmental problem, and the gold sector is particularly affected.