D) It modernized farms and rural areas
Hope I helped :)
i'm not really sure but i don't think the fall of nubia/kush had anything to do with being taken over by the kindom of aksum.. i may be incorrect tho!
Answer:
The correct answer is option b. using shaping to teach your son to eat with a spoon.
Explanation:
Shaping is a conditioning strategy which is bought to use specifically when the behavior of species is to be analysed.
Differential reinforcement is used for the purpose of successive approximations. B.F,Skinner introduced this concept and experiments on animals and birds like pigeons, dogs, dolphins and eventually human beings.
The above question, you are shaping the activity of eating with a spoon to be a happy and appreciative act through constant applaud.
Answer:
c. Observational studies have both independent and dependent variables.
d. Observational studies can be used to test hypothesis.
Explanation:
Observational studies are ones in which a researcher makes observations about his thoughts and views. He observes the risk and other effects before actual test takes place. This is usually the initial phase of research where observations are made for suitability of certain things that are to be researched. There is initial feasibility test conducted to identify whether the further research process is beneficial or not.
The first appearance that an accused makes in court is called an arraignment.
