Answer:
Is that internal validity refers to the structure of a study and it's variables while external validity relates to how universal the results are.
Explanation:
Answer:
because the river's annual flooding ensured reliable, rich soil for growing crops
Explanation:
Answer:
Cerebral Hemispheres
Explanation:
Aida Gómez-Robles, an anthropologist at The George Washington University, and her colleagues compared the effect of genes on brain size and organization in 218 human and 206 chimpanzee brains. They found that although brain size was highly heritable in both species, the organization of the cerebral cortex—especially in areas involved in higher-order cognition functions—was much less genetically controlled in humans than in chimps. One potential explanation for this difference, according to the researchers, is that because our brains are less developed than those of our primate cousins at birth, it creates a longer period during which we can be molded by our surroundings.
reference:https://www.scientificamerican.com/article/what-makes-our-brains-special/
Answer:not
Explanation: A true friend never have to tell you what you have to use or wear. That’s why every person have a free life to decide what kind of brand or clothes without any brand wear.
And it’s important to know that if your friend wants that you only wear jeans of some brand, that friend is not a true or a good friend. Because he or she will have to love you with your free decisions.