1 )http://www.mbgnet.net/salt/animals/echinod.htm How Do Sea Stars Move? Each sea star had hundreds of tiny feet on the bottom of each ray. These are tube feet‚ or podia. These tiny feet can be filled with sea water. The vascular system of the sea star is also filled with sea water. By moving water from the vascular system into the tiny feet‚ the sea star can make a foot move by expanding it. This is how sea stars move around. Muscles within the feet are used to retract them. Each ray of a
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the Organism: Hyalella azteca Chemosensory organs in many crustaceans including Hyalella azteca allow them to locate food and mates while entirely avoiding predators. When detecting environmental changes such as the change in chemicals such as salinity‚ many amphipods have tiny hair-like organs containing sensory cells called sensilla (Hallberg‚ 2011). These chemosensory olfactory receptors are virtually found on many parts of the crustacean body including antennae‚ mouthparts and tips of the walking
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Challenger Expedition (Lesson 02.02)—Best resource link to use = “Account of the Voyage of the Challenger” • Besides conducting sampling of the waters on its journey‚ what were the main findings from the Challenger voyage? • What tool was used to do measure the depths of the ocean? • What are the 2 pieces of equipment used to collect bottom samples on the Challenger? • What was a newly invented piece of equipment used on the Challenger ship to get water samples called? Rocky Shore (Lesson 02
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uses an extended metaphor comparing the wealthy‚ powerful men beguiled by a beautiful woman sensually eating ice cream with a variety of predatory fish enamored by a ‘white stone’. Douglas uses metaphors‚ ‘a cotton magnate‚ an important fish’‚ ‘a crustacean old man’‚ ‘a lean dark mackerel’ and ‘gallants in shoals’‚ to highlight the similarities between the actions of the men and the predictable behaviors of the fish in an exaggerated manner. The men’s distasteful actions‚ ‘teeth parted in a stare’
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Tools used to measure latitude (Lesson 02.01) (use the first resource in this lesson to help you) • Be able to list and describe the 3 main tools used to measure latitude in early navigation Tools used to measure longitude (Lesson 02.01) (use the first resource in this lesson to help you) • Be able to list and describe the 2 main tools used to measure longitude in early navigation Current Navigation Tools (Lesson 02.01) • What tool do we currently use to determine location (latitude and longitude)
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The global market for aquafeed is expected to reach USD 133.1 billion by 2020‚ according to a new study by Grand View Research‚ Inc. Increasing use of aquafeed in carp and crustacean farming is expected to boost market demand over the forecast period. The growing market for aquaculture‚ owing to the static natural production of fishes is expected to be another key driver for market growth over the next six years. In addition‚ the increasing focus on nutraceuticals such as omega 3 enriched products
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The purpose of lab number thirteen was to examine the response of the daphnia to a chemical stimulant. Also examined was how human resting heart rates differed from the daphnia’s. Stimulants are any substances that raise the levels of activity in the body. Stimulants could be a number of things such as physical or chemical. Physical stimulus usually deal with something that affects the five senses such as sight‚ hearing these could be attributed to loud noises or too much light going into your eye
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Tools used to measure latitude (Lesson 02.01) (use the first resource in this lesson to help you) Be able to list and describe the 3 main tools used to measure latitude in early navigation Sextant- allowed users to determine their latitude to within a sea mile or two The gnomon or sun-shadow disk- operated like a sundial‚ enabling the user to determine his latitude by the length of the sun’s shadow cast on a disk floating level in water. The Arabian kamal- a rectangular plate that one moved
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Armadillidiidae is a family of woodlice‚ a terrestrial crustacean group in the order Isopoda. Unlike members of other woodlouse families‚ members of this family can roll into a ball‚ ability they share with the outwardly similar but unrelated pill millipedes and other animals. It is this ability which gives woodlice in this family their common name of pill bugs‚[1] doodle bugs‚ or roly polies. The best-known species in the family is Armadillidium vulgare‚ the common pill bug. The Classification
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Opisthokonta: Metazoa II: Eumetazoa: Bilateria: Protostomia: Ecdysozoa Objectives: • Know the key features of the Phylum Nematoda. Know how they relate to other metazoan phyla. • List the key characteristics of the Phylum Arthropoda. Identify examples. List the four subphyla and their key distinguishing features. Identify examples of the subphyla Chelicerata‚ Crustacea‚ Myriapoda‚ and Hexapoda. • Be able to identify the different structures on these organisms and understand their function. • Understand
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