I think the answer is the bantu family
I believe the answer is: negative reinforcement
Negative reinforcement refers to the type of reinforcement a form of reinforcement that make a subject become uncomfortable to the point where the subject would do some efforts to avoid or eliminate the negative reinforcement (just like the horrendous ding sound)
Answer:
Asia
Explanation:
Mount Everest in the HImilayan Mountains
Terrazzo flooring is a name for concrete tile.
Concrete tile can be used anywhere from indoors to outdoors. It can be used on floors, walls, fireplace surrounds, pools and patios, shower enclosures, countertops, backsplashes, and building façades. In many cases, concrete tile sizes, finishes, and colors can be customized to suit your design needs. It has low hygroscopicity comparing to the clay. It resist freezing cycle. It doesn't exfoliate or break. They are made from a mixture of sand, cement, color pigment, and a marble powder that is poured into metal molds, backed by a dry concrete mixture. Terrazzo flooring is a name for concrete tile. Terrazzo is a composite material, poured in place or precast, which is used for floor and wall treatments.
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The earliest introduction of zebra mussels in united states probably occurs in 1986.
At that time, commercial vessels from Europe went to north America as a place for freshwater ballast stowaway. They merchants then introduced zebra mussels to the market and it gained popularity ever since. They also introduced zebra mussels population in local lakes and let them reproduce there.
