Tropism is a descriptive reaction of a certain stimuli on how an organism responds to the confronted stimuli which can be called positive tropism or negative tropism.
<span>In positive tropism as the proposed answer </span>toward <span> involves the organism leaning forward or direct to the acting stimuli whereas the negative tropism is exactly the opposite. </span>
Answer: The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel. The NiFe alloy of the outer core is very hot, between 4,500° and 5,500° Celsius (8,132° and 9,932° Fahrenheit).
Explanation: