ee ooo AT&T; F 10:05 PM moodle csun.edu Congratulations! You have won a ticket a

Question

ee ooo AT&T; F 10:05 PM moodle csun.edu Congratulations! You have won a ticket allowing you to accompany James Cameron in his ep-sea exploration of the oceanic ocean bottom in his new and larger submarine th Deepsea Challenger 2". Describe your oceanic voyage from the surface to the bottom o the ocean floor. Your description should include all of the zones and their respective depths, all of the major environmental changes you observe as you descend through these zones, examples of organisms that you encounter in each major zone, the major challenge that they encounterwithin each major zone, and the adaptations that each has evolved i order to survive the challenges within each zone. Note: am expecting a thorough answer for this question and adequate space has been provided. Compare and contrast migration and dispersal. In regards to migration, what is the benefit of undergoing seasonal migrations? Provide a detailed description of the seasonal migration of a marine species (ie, where does it go,why is it undertaking the migration, etc). In regards to dispersal, describe/discuss planktonic larval dispersal (PLD), its relevance to the distribution of a species, the key factors that affect where larvae dispe to, factors that limit the duration of PLD,triggers for settlement, and how successful this strategy is for establishing the next generation (i.e what are the pros/cons of this strategy?) Compare and contrast asexual and sexual reproduction. When is asexual reproduction beneficial? Provide examples of asexual reproduction and the potential problems associated with asexual reproduction. Describe three disadvantages of sex that lead to the "paradox of sex". Describe three strategies that enhance the fertilization success of broadcast spawning species. How does internal fertilization increase reproductive success and what challenges still remain for internally fertilizing species? Define/describe viparity, aplacental viviparity, histotrophy, placental viviparity, and intraute cannibalism and provide the benefits to each of these reproductive modes, Provide example of either a protogynous or a protandrous sequential hermaphrodite, the initial and terminal phases of the species, what drives the sex change within the environment, and the evolutionary benefit of this productive strategy. Describe the flow of energy (trophic structure) within a marine community composed of at east 5 trophic levels (you'll need to indicate "who is at each level, they' re role, and whether they transfer or receive energy (or both). Provide an explanation for why the amount of available energy to each "higher" trophic level decreases. What are the limi ng resources for most marine species and why are they important? Describe vertical mixing and the effect of the compensation depth, mixing depth, and critical depth on net primary productivity. How does vertical mixing change the concentration of nutrients in northern temperate waters seasonally and what conditions would lead to a summer algal bloom? Briefly, describe the pattern ofsuccession at a whale fall, at least one major organism for each phase of the succession, and the average amount of time that whale fall communities exist. Riftia are the dominant benthic organisms in black smoker hydrothermal vent communities. Riftia has no mouth, nor gut (digestive tract), or anus. How does Riftia, a heterotrophic orm, obtain sugars for cellular respiration? What is the relevance o 17%E

Explanation / Answer

Q.1) The oceanic dpeth has been sorted into zones based on the penetration of light and the amount of pressure felt in these depths.The five distinguishable layers of ocean are

a)Epipelagic zone-

b) Mesopelagic zone:

c)Bathypelagic zone:

d) Abyssopelagic zone:

e) Hadopelagic zone:

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