Some crops are more efficient at utilizing their environments to produce grain growth than others
What will be an ideal response?
This is the case. We have mentioned that C
3 and C4 plants respond differently to
water and carbon dioxide. It is clear that various plants evolved in different locations by
"learning" how to respond to local environmental conditions. Now plants are grown in
environments to which they are not adapted, and those differences do affect growth of the
plant.
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If global warming proceeds during the next century as anticipated, the polar ice caps may melt, substantially raising sea levels around the world (and flooding coastal cities such as New York and New Orleans). What effect will this have on the duration of the day?
A. It will lengthen the day slightly. B. It will shorten it slightly. C. It will have strictly no effect.
Two objects are placed in a room with a temperature of 20°C. Object A has a temperature of 70°C, while object B has a temperature of 140°C. They have the same emissivity, but different areas
What should the ratio of the area of object A to that of object B be if the net power emitted by both objects is the same? A) 2.0 B) 3.4 C) 5.2 D) 17 E) 21
An object is placed near a concave mirror having a radius of curvature of magnitude 60 cm. How far should you place the object from the mirror so that the lateral magnification produced by the mirror will be +2.5?
A) 18 cm B) 24 cm C) 30 cm D) 36 cm E) 42 cm
Constellations look the same from everywhere in the galaxy.
Indicate whether the statement is true or false.