What kind of unconformity is present between rock units L and J?
What will be an ideal response?
Angular, J is at an angle to L
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If the surface stream water at Sample Site 3 is contaminated by the entrance of groundwater, could the pollution have come from either the waste pit or the pasture? How might you tell which is the case?
The question is based on Figure 25-3, a map of a hypothetical landscape with an effluent stream flowing from northeast to southwest. Water table contours are drawn at 2-foot intervals and flow lines show the direction of groundwater movement at the top of the zone of saturation. The waste pit in the north was dug down to a depth just slightly above the water table in that location. A fenced pasture for grazing livestock is in the east. Two wells are shown, and the locations of three water quality sampling sites along the stream are indicated. What will be an ideal response?
The potato is native to Europe
Indicate whether the statement is true or false.
What is a hydrothermal vent? What process is involved in their making? Who is responsible for
discovering these vents? What will be an ideal response?
Is extinction natural? How has the extinction rate changed over time? Why are extinction rates today different than in the past?
What will be an ideal response?