A river forms a canyon over time as shown in the diagram. Canyon
River
-River
Year 2,000,000
Year 1
How did the river cause the canyon to form?
O A. The motion of water compacted soil until it became sedimentary rock.
OB. The motion of water wore away and transported rock away from the area.
O C. The motion of water prevented rock layers from forming beneath the water.
OD. The motion of water prevented plants and animals from forming the land in the river bed.

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.