What is the most important agent for modifying the equilibrium profile of beaches? What will be an ideal response?
Storm waves have a much greater effect than tides and longshore currents.
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The wood thrush makes its nest in woodlands in the northern and eastern United States. As patches of woods become smaller, increasing numbers of wood thrush nests have eggs laid in them by the brown-headed cowbird
Cowbirds live in open fields and are nest parasites; the female cowbird flies up to an unattended nest, quickly lays an egg in it, and leaves the host parents to raise their "adopted" young. Wood thrushes are decreasing in numbers because ________. A) climate change is reducing nest site availability B) habitat fragmentation makes it easier for cowbird parasitism to occur C) overharvesting in the open fields has driven the cowbirds into the woodlands D) cowbirds are an invasive species that is rapidly increasing E) pollution of the open fields has caused a change in cowbird behavior
Why are rivers and deserts used as physical boundaries? How can these either reduce or increase the likelihood of potential conflicts between states?
What will be an ideal response?
Which is not a type of sandstone?
A. arkose B. coal C. quartz sandstone D. graywacke
A ridge of sand projecting into a bay and often having a hooked end is a ________
A) spit B) groin C) sea stack D) jetty