Outline the different types of deltas. What will be an ideal response?
The shape of a delta represents a balance between the accumulation of sediments and their
removal by the ocean. For a delta to maintain its size or grow, the river must carry enough
sediment to keep marine processes in check. The combined effects of waves, tides, and river
flow determine the shape of a delta. (1) River-dominated deltas are fed by a strong flow of
fresh water and continental sediments, and they form in protected marginal seas. They
terminate in a well-developed set of distributaries, the split ends of the river, in a
characteristic bird’s-foot shape. In (2) tide-dominated deltas, freshwater discharge is
overpowered by tidal currents that mold sediments into long islands parallel to the river flow
and perpendicular to the trend of the coast. The largest tide-dominated delta has formed at the
mouths of the Ganges–Brahmaputra river system. (3) Wave-dominated deltas are generally
smaller than either tide- or river-dominated deltas and have a smooth shoreline punctuated by
beaches and sand dunes. Instead of a bird’s-foot pattern of distributaries, a wave-dominated
delta will have one main exit channel.
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In traditional societies, children may be economic assets, which may provide one explanation of why birth rates remain high in Stage Two of the demographic transition
Indicate whether the statement is true or false.
On a weather map of the Northern Hemisphere, the trade winds would be observed?
a. ?north of the polar front. b. ?between the polar front and the subtropical highs. c. ?south of the subtropical highs. d. ?between the subpolar lows and the subtropical highs. e. ?between the subpolar lows and the tropical highs.
If ground water is contaminated with petroleum products, pumping from a level close to the water table may selectively extract much of the pollution.
Answer the following statement true (T) or false (F)
What factor allowed syncretic religions to endure in Latin America?
A) The people of Latin America fought for their religious freedom. B) The Catholic Church tolerated local variations in worship as long as conversion was underway. C) Government laws guaranteed freedom of religion. D) Historically, the expanse of Latin America made enforcing any orthodox religion difficult. E) The Catholic Church sent very few missionaries, so the religious instruction was minimal.