The correct answer would be the second option. The correct plan for his experiment would be that the temperature, the type of limestone, and the type of acid are controls. The amount of acid and the amount of damage to the limestone are variables. To determine the degree of damage of the acid it would be best that the amount of acid is the manipulated variable while everything else are assumed constant.
Answer:
In the context of the Piagetian stages, she is most likely in the preoperational stage.
Explanation:
According to Piaget, the preoperational stage of cognitive development is the second stage, taking place from 2 to 7 years of age. Children at this stage are able to work with symbols, but are still unable to do logical (concrete) thinking.
One of the principles children at this stage are still unable to understand is conservation - the fact that the appearance of something changes, but its quantity remains the same. Children who are able to conserve understand that, if you pour one liter of water from a bottle into a big bowl, the amount of water is still the same one liter. A child at the preoperational stage would not comprehend that.
Answer:
the answer is D. poorly located facilities do not impact logistical effectiveness.
Explanation:
