Environmental Science
The pyramid of number of a parasitic food chain in forest ecosystem is

always upright
mixture of inverted and upright
always inverted
sometimes inverted and sometimes upright

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Environmental Science
The lag in daily temperature refers to the time lag between the:

Time of maximum solar radiation and the time of maximum temperature
Sunrise and sunset
Time of minimum temperature and the time of maximum solar radiation
Minimum and maximum temperature for a day
Minimum and maximum solar energy received at the surface for a given day

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Environmental Science
Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

Decrease as the air becomes drier
Decrease as the air becomes moister
Increase as the air becomes drier
Increase as the air becomes moister

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