Fill in the two blanks in the following statement:
according to the intergovernmental panel on climate change, the average global temperature increased by in the last 100 years, with more than half of that warming occurring in the last years.
a. 1° c; 10
b. 1° c; 30
c. 2° c; 30
d. 2° c; 10
e. 3° c; 30

B. 1° C; 30

Explanation:

According to the Intergovernmental Panel on Climate Change, the average global temperature increased by 1° C in the last 100 years, with more than half of that warming occurring in the last 30 years.

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this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.