Which of the following is not a requirement for photosynthesis?
A) sunlight
B) water
C) color
D) a suitable substrate for plant growth
E) nutrients
Answer: C
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The bioaccumulation of DDT threatened several species of fish eating birds by
A. making them dizzy and unable to fly. B. making them lose their feathers. C. making them lose their urge to hunt. D. making their egg shells too strong for hatching young birds to break free from. E. causing them to lay eggs with shells too fragile to reproduce successfully.
The purpose of the Mahakali project in Nepal is to
A. build dams B. build roads C. educate children D. treat disease
A significant source of methane, an important greenhouse gas, is livestock flatulence. Indicate whether the statement is true or false
Magma can form up to 250 km deep in the Earth. If magma forms at such a depth, how can magma at that depth rise through the mantle and the crust toward the surface?
What will be an ideal response?