Final answer:
Scientists who assert that human activity has contributed to global warming point to several pieces of evidence.
Step-by-step explanation:
Scientists who assert that human activity has contributed to global warming point to several pieces of evidence:
- The consensus among climate researchers that human activities, such as burning fossil fuels, have led to an increase in greenhouse gas emissions and subsequent global warming.
- The endorsement of this finding by the academies of science in major industrialized countries.
- The establishement by the Intergovernmental Panel on Climate Change that human activities are having a discernible influence on global climate.