I think A)People had more time for face to face contact
Answer: the 1st one i think
Explanation:
Its because of people burning fossil fuels and causing pollution.
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Explanation:
(a) Experimental unit
A person or an object, or some well-defined body or item on which some treatment is applied
(b) Treatment
Combination of a values of factors. These are explanatory variables.
(c) Response variable
The qualitative variable or quantitative variable in which the researcher wants to determine how the value is affected by any explanatory variable.
(d) Factor
It is the variable whose influence on a response variable can be assessed by the researcher.
(e) Placebo
An innocuous treatment, like a sugar tablet, which looks, smells and tastes like an experimental medication.
(f) Confounding
The effect of the two factors cannot be distinguished.
The Effects of Artificial Intelligence. Technology is taking over more routine, repetitive tasks. As a result, humans are trusting technology to make our lives simpler as AI is creeping into our homes, transportation and our smartphones. Driverless cars are on the road in many of our cities
