B is the answer to the question
“Scientific models are often used in laboratories to represent Earth's processes. While field tests and observations are vital, physical, digital, and mathematical models are useful tools in the laboratory. Models provide insight into complex processes that might otherwise be difficult to grasp”
The most appropriate answer would be B. There is a behavioral phenomena in humans to avoid those they see as different, but also to avoid those who are known to be diseased regardless of the threat of infection. This can lead to social isolation for those with STI, if their condition becomes known to others.
Answer:
As more and more time is spent on one activity, the opportunity cost of that activity in terms of other activities rises
Explanation:
The allocating scarce resources is done to increase the output for the well being of the nation. This resources allocation must be associated with the decision makings.
Time is the important scarce resource that constrain the human behavior. The achievement of the particular goal occur by the efficient use of the time. The humans have different capabilities and spending more time on single activity can increase the opportunity cost.
Thus, the correct answer is option (1).
Answer: the anwser is D
Explanation: More than 60% of americans don't exercise on a regular basis
