Is it possible to change the velocity of a stream but have it maintain the same discharge? Explain
Yes. The discharge (Q) is a product of the velocity (V) and the cross-sectional area (A ); that is, Q = VA. To maintain the same discharge while changing the velocity, it is necessary to change the cross-sectional area at the same time, and in the opposite manner. For example, if the velocity is increased, the cross-sectional area would need to be decreased by an appropriate amount.
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Between 1.3 and 1.0 billion years ago, the Grenville orogeny occurred in the supercontinent __________
Fill in the blank(s) with correct word
Which of the following can be inferred from the figure shown?
A) Polar bears and grizzly bears usually do not compete for the same resources. B) Both polar bears and grizzly bears can acclimate to temperatures outside of their tolerance range, but only if they are gradually exposed to the extreme temperatures. C) Grizzly bears outcompete polar bears where their ranges overlap. D) Both polar bears and grizzly bears can tolerate an air temperature of 5°C. Read the following scenario, and answer the questions below. In North America, a toxic weed called leafy spurge was accidentally introduced and has grown and spread rapidly, covering millions of acres in north-central United States and south-central Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus, rangeland where leafy spurge has spread has been damaged by the invasion of this plant.
Which one of the following is NOT a way to place value on ecosystems services?
A. cost farmers are willing to pay to have bee hives placed in their orchards. B. providing free access to protected habitats. C. fees to visit protected environmental sites. D. cost of the damage to coastal areas caused by the destruction of wetlands.
Compare the Energy Policy Act of 2005, the Energy Independence and Security Act of 2007, and the Obama administration initiatives relative to supply- and demand-side strategies
What will be an ideal response?