Answer:
a
Explanation:
After Columbus’ arrival in the Americas, the animal, plant, and bacterial life of these two worlds began to mix. This process, first studied comprehensively by American historian Alfred Crosby, was called the Columbian Exchange. By reuniting formerly biologically distinct land masses, the Columbian Exchange had dramatic and lasting effects on the world. New diseases were introduced to American populations that had no prior experience of them. The results were devastating. These populations also were introduced to new weeds and pests, livestock, and pets. New food and fiber crops were introduced to Eurasia and Africa, improving diets and fomenting trade there. In addition, the Columbian Exchange vastly expanded the scope of production of some popular drugs, bringing the pleasures — and consequences — of coffee, sugar, and tobacco use to many millions of people. The results of this exchange recast the biology of both regions and altered the history of the world.
Answer: 1. The child develops empathy for his mother, is aware that his stuffed animal makes him feel good, knows that his mother is not well and gives it to him so that he is better.
2. Johnny doesn´t have a definite concept of sizes, he only knows about units, that´s why his brother manages to "rip him off".
3. Sally requires a repetition and practice process, going back to her roller skating training, avoid to focus on their fears.
The answer is c im pretty sure
Answer:evolutionary psychology
Explanation:
Evolutionary psychology focuses o those behaviors that are due to the traits that we inherited from our ancestors, one's territory was very crucial to protect by all means and this was a survival instinct from our ancestors. If they didn't protect their territory that means they would lose everything that they have built so this issue of not wanting to reverse out if someone is coming in your previous parking spot is an instinctive way of protecting one's own territory.
Answer:
C) Stratified sampling
Explanation:
Stratified sampling: This is one of the probability sampling technique in which the researcher tends to divides a particular population that is taken for the researcher purpose into various groups or strata, and after dividing the population, the researcher randomly finally selects the participants from those groups or strata and being analyzed later on. Further, the group is taken for study is through the random sampling technique.
Advantage:
1. It provides great precision.
2. The study group is small, hence cost-effective.
