Answer:
A. a replication of studies
Explanation:
A researcher performs a previous study following the same procedures to see if she will get the same results.This is an example of a replication of studies.
Carrying out a previous research under the same exact conditions to see if the results will be the same is simply a replication of study. Replication of studies is necessary for the validation of results gotten from the previous research.
Answer:
Stone were used
Bone
Explanation:
Throughout the Paleolithic, humans were food gatherers, depending for their subsistence on hunting wild animals and birds, fishing, and collecting wild fruits, nuts, and berries. The artifactual record of this exceedingly long interval is very incomplete; it can be studied from such imperishable objects of now-extinct cultures as were made of flint, stone, bone, and antler. These alone have withstood the ravages of time, and, together with the remains of contemporary animals hunted by our prehistoric forerunners, they are all that scholars have to guide them in attempting to reconstruct human activity throughout this vast interval—approximately 98 percent of the time span since the appearance of the first true hominin stock. In general, these materials develop gradually from single, all-purpose tools to an assemblage of varied and highly specialized types of artifacts, each designed to serve in connection with a specific function. Indeed, it is a process of increasingly more complex technologies, each founded on a specific tradition, that characterizes the cultural development of Paleolithic times. In other words, the trend was from simple to complex, from a stage of nonspecialization to stages of relatively high degrees of specialization, just as has been the case during historic times.
In the manufacture of stone implements, four fundamental traditions were developed by the Paleolithic ancestors: (1) pebble-tool traditions; (2) bifacial-tool, or hand-ax, traditions; (3) flake-tool traditions; and (4) blade-tool traditions. Only rarely are any of these found in “pure” form, and this fact has led to mistaken notions in many instances concerning the significance of various assemblages. Indeed, though a certain tradition might be superseded in a given region by a more advanced method of producing tools, the older technique persisted as long as it was needed for a given purpose. In general, however, there is an overall trend in the order as given above, starting with simple pebble tools that have a single edge sharpened for cutting or chopping. But no true pebble-tool horizons had yet, by the late 20th century, been recognized in Europe. In southern and eastern Asia, on the other hand, pebble tools of primitive type continued in use throughout Paleolithic times.
On my computer the map won't load but i'm guessing A. people cannot farm in Africa.
(hope this helps :C
Answer: The parent plant reproduced asexually by vegetative reproduction, and the plant in John's garden has genes identical to those of the plant in Leah's garden.
Explanation:
The reason for the growth of the small stem into a full-sized, new plant is due to vegetative reproduction, and also because the plants that are in John’s garden has genes that are thesame to the plant that we have in Leah’s garden.
Vegetative reproduction occurs when there is a growth in a plant due to the fragments that are gotten from the parent plant.
I believe the answer is: closure
Closure cause the members in a group to have underlying assumption that other people from outside their group would behave in the exact same way as their group do. Having this point of view would make them become unprepared when their collective view is challenged by differing opinion.
