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fatima mahguub

fatima m.

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A freshwater fish gains most water by ______. a. drinking b. eating food c. osmosis d. transport across the gills

A freshwater fish gains most water by ______. a. drinking b. eating food c. osmosis d. transport across the gills

Biology Concepts and Applications

Questions asked

AWAITING AN EDUCATOR

Q2.22. In the figure below, islands \( A \) and \( B \) are the same size and distance from the mainland. One of them has some smaller islands between it and the mainland. Based on island biogeography, what difference would you expect to see in species richness between \( A \) and \( B \), and why? Island \( A \) should have more species than Island \( B \) because Island B's extinction rate is higher. Island \( A \) should have more species than Island \( B \) because Island \( A \) 's colonization rate is higher. Island \( B \) should have more species than Island \( A \) because Island \( A \) 's extinction rate is higher. Island \( \mathrm{B} \) should have more species than Island A because Island B's colonization rate is higher. Submit

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INSTANT ANSWER

Q1.9. Recall that you explored how to make a species-accumulation curve by photo sampling along a virtual rock wall. Examples of three such curves are shown in the figure below. Which of the statements under the figure about species-accumulation curves is TRUE?

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AWAITING AN EDUCATOR

Q3.24. This payoff matrix summarizes expected payoffs for loon conflicts over territories, according to a game with Hawk and Dove strategies. What should a loon Challenger do? Use the dropdowns below to complete your answer.

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INSTANT ANSWER

Q2.24. Based on these data, what is the profitability of mayflies? \( \mathrm{cal} / \mathrm{s} \) Sabmit Q2.25. Assume that early in the summer, the only prey available are stoneflies and mayflies. If the search time for its preferred prey (the more profitable stonefly) is too long, the house martin should include both stoneflies and mayflies in its diet. What is the value of this critical search time for stoneflies? (Hint: be careful to use values from the correct rows and columns of the table in your calculation!) Subinit Q2.26. Later in the season, stoneflies have disappeared and house martins must choose between caddisflies and mayflies. This means that the critical search time for the preferred (more profitable) prey is 2 seconds. Assuming birds forage optimally, which prey items should a house martin eat? Caddisflies only Mayties only Both caddisflies and mayflies There is not enough information to answer the question.

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INSTANT ANSWER

Q1.24. Kodric-Brown and Brown wanted to explore how reducing territory quality would affect foraging behavior. They created lowdensity territories by removing half the flowers, and they compared them to high-density, unmanipulated territories. Which of the four graphs below best illustrates how reducing flower density will affect the cost (C) or benefit (B) curve of the low-density territory? (Subseripts indicate whether the curve represents a territory with a high-density \( (\mathrm{H}) \) or low-density \( (\mathrm{L}) \) of flowers.) Terinory size \( \left(\mathrm{m}^{2}\right) \) Tentery size ( \( \left.\mathrm{mi}^{3}\right) \) Terrtiory ske \( \left(m^{2}\right) \) Aentwy werim?

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AWAITING AN EDUCATOR

centralized location. Beaver venture out from their lodges to collect plant matter, returning to store this food in or near the lodge. Submi Q1.23. Late each summer, migrating rufous hummingbirds stop in Arizona, where they establish and defend territories. Larger territories contain more flowers, provide more energy in the form of nectar, and are harder to defend. Researchers Astrid Kodric-Brown and James Brown developed a cost-benefit model to help explain observed variation in territory size \( (S) \). A modified version of their model is shown to the right. Based on this model-and assuming optimal behavior-how large an area should a hummingbird defend (referring to labels on the \( \mathrm{x} \)-axis)? \( S_{1} \) \( S_{2} \) \( S_{3} \) \( S_{4} \) submilis Q1.24. Kodric-Brown and Brown wanted to explore how reducing territory quality would affect foraging behavior. They created lowdensitv territories hv ramnvina half tha flacornde ond th.......... .

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ANSWERED

The photograph to the right is characteristic of which major biome? A. Arctic tundra B. Coniferous forest C. Temperate forest D. Desert

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ANSWERED

Caroline Mcclure verified

Numerade educator

What would happen if Earth's axis of rotation were tilted at a lesser angle (e.g., 10° instead of 23.5° toward/away from the Sun? A. Seasons would be more pronounced. B. Seasons would be less pronounced. C. There would be no difference in average temperature between the poles and the Equator. D.Nothing would change.

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ANSWERED

Jessica Wolf verified

Numerade educator

The theory of plate tectonics explains how Earth's continents move. According to this theory, which of the following statements is TRUE? A. Earth's crust is composed of relatively thin, light plates that float atop the dense, viscous upper layer of the mantle. B. The area of an ocean basin can increase at a convergent boundary, where two continental plates collide into each other. C. Continental plates have stable shapes because they are heavier than oceanic plates and tend to slide downward where the two meet. D. Many of Earth's mountains result from two continental plates sliding past each other along a transform boundary.

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ANSWERED

Ronald Prasad verified

Numerade educator

According to your regression analysis, mammal diversity is best predicted by which of the following? A. Precipitation B. Potential evapotranspiration (PET) C. Actual evapotranspiration (AET) D. Tree species richness

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