The use of weed killers has removed a limiting factor to the size of populations of crop plants.
Answer the following statement true (T) or false (F)
True
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The production of hydrogen used to power cars requires ________
A) fusion reactions typical of nuclear power plants B) fermentation using water and sugars C) an efficient means of capturing hydrogen gas from the atmosphere D) a net input of energy
The goparum is a structure unique to South India's form of Hinduism. The presence of this structure in Fiji is an interesting aspect of the ____ _____
a. cultural landscape b. digital divide c. man-land theory d. physical geography e. environmental determinism
The major role of thermal energy (heat) in metamorphism is ________
A) reducing the strength of rocks so that stress can be an effective agent of change B) increasing the processes of dissolution and flow of different minerals C) providing energy for the physical changes that occur during metamorphism D) driving chemical reactions that lead to recrystallization
In temperate oceans of the northern hemisphere during the winter months ________
A) nutrient concentrations are high, solar input is low, and water temperatures decrease B) nutrient concentrations are high, solar input is high, and water temperatures decrease C) nutrient concentrations are high, solar input is high, and water temperatures increase D) nutrient concentrations are low, solar input is high, and water temperatures decrease E) nutrient concentrations are low, solar input is low, and water temperatures decrease