Concept explainers
SCIENTIFIC INQUIRY • INTERPRET THE DATA Researchers studied
mechanisms that can alter allele frequency, construct a hypothesis that explains the patterns you observe in the data and that accounts for the following observations: (1) The lap94 allele helps mussels maintain osmotic balance in water with a high salt concentration but is costly to use in less salty water;
and (2) mussels produce larvae that can disperse long distances before they settle on rocks and grow into adults.
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CAMPBELL BIOLOGY,VOL.II >CUSTOM<
- Variation in diversity and richness 6) A) Draw the curve of fish species richness you expect to see with latitude from the South Pole to the North Pole, in the Pacific Ocean. B) Add a similar curve for the Atlantic Ocean, which is younger and smaller than the Pacific. Are the curves different? Why (or why not)? 90°S 45°S 0° 45°N 90°N Species richnessarrow_forwardHello! I have an assignment this week but I don't understand how to create a controlled experiment and can't come up with any ideas yet. The question is the following: What do climate change and ocean acidification have in common? Design a controlled experiment to test the hypothesis that water acidification caused by acid rain would inhibit the growth of Acropora, a reef-building coral. Thanks in advance!arrow_forwardsome of the Adélie colonies in this area. Which statement is supported by both the text and the excerpt above? All three penguin species, Chinstrap, Adelie, and Gentoo, live only on sea ice. The food supply for Adelie penguins includes both fish and krill in the Antarctic seas. Adelie penguins are dependent on the existence of sea ice for access to their food supply. Temperatures in the Antarctic have increased substantially in the last 60 years.arrow_forward
- thank youarrow_forwardMytilus trossulus species of mussel lives in freshwater does this still mean that the water has a higher salt concentration than the mussels' body fluids?arrow_forwardHOTSPOT ANSWER Question 18 After pulling in their fishing nets, Juniper discovered a species of fish they hadn't seen before. The fish has large gills, a swim bladder, a streamlined body, and well-developed muscles that can withstand changes in pressure. Press the hotspot that indicates the water layer where this fish most likely lives. Hint: If it can withstand changes in pressure, it's probably swimming be- tween zones. C C «» 0:00/0:28 Benthic Speed: 1x Pelagic Photic Zone (0-200 m) Points Paused Mid-Water Zone (200-1000 m) O Aphotic Zone (1000+ m) Maximan Ocean Depth Marianas Tanch-10,911 marrow_forward
- Q4.16. Your colleague designed a common garden experiment to determine if moisture level influences competition between a native alga and an exotic alga. The design includes four plot types: wet with native only, wet with exotic only, wet with both algae, and dry with both algae. The results are below. Plot Native alga Wet: native only Grew well Wet: exotic only n/a Exotic alga n/a Grew well Wet: both algae Grew well Dry: both algae Went extinct Grew well Went extinct You note that his experimental design is incomplete and, as a result, he cannot support one of the following conclusions. Which conclusion is NOT supported? The native alga's fundamental niche includes wet habitats. The exotic alga's fundamental niche includes wet abitats. The exotic alga competitively excludes the native alga in dry habitats. The native alga competitively excludes the exotic alga in wet habitats.arrow_forwardThinking Analytically Considering the fact that we have already found more than 20,000 deep-sea marine species and we have only explored a few percent of the deep ocean, how many total species do you think there may be in the deep sea?arrow_forwarduestion 23 Which of the following statements most accurately describes the transport of zebra mus- sels to the Great Lakes due to anthropogenic activity? The zebra mussel was unintentionally transported to the Great Lakes on ships' hulls and in their ballast tanks. The zebra mussel was intentionally transported to the Great Lakes to improve the ecosystem. The zebra mussel was intentionally transported to the Great Lakes due to its visual appeal. The zebra mussel was unintentionally transported to the Great Lakes on the cargo crates of ships.arrow_forward
- OBSERVATIONS • Sea otters feed significantly on sea urchins, often keeping urchin abundance 'in check'. • Sea urchins feed heavily on kelp, decimating kelp forests when urchin abundance is high. • Kelp forests protect the shoreline from coastal erosion by buffering wave action. • Orcas have been observed feeding on sea otters in the kelp forests of western Alaska. Table 1. Hypothesizing the relationship(s) between orcas, otters, urchins, kelp, and erosion. ↑ = increasing; V = decreasing %D When the abundance of: or v abundance/incidence of: select ↑ or V sea otters 个 sea urchins decreases sea otters sea urchins Choose One: sea urchins kelp Choose One: sea urchins kelp Choose One: orcas sea otters Choose One: orcas sea otters Choose One: kelp coastal erosion Choose One: kelp coastal erosion Choose One: sea urchins coastal erosion Choose One: sea urchins coastal erosion Choose One: sea otters coastal erosion Choose One: sea otters coastal erosion Choose One: orcas sea urchins Choose One:…arrow_forwardQ4.16. Your colleague designed a common garden experiment to determine if moisture level influences competition between a native alga and an exotic alga. The design includes four plot types: dry with native only, dry with exotic only, dry with both algae, and wet with both algae. The results are below. Plot Native alga Dry: native only Grew well Dry: exotic only n/a Dry: both algae Grew well Wet: both algae Went extinct Exotic alga n/a Grew well Went extinct Grew well You note that his experimental design is incomplete and, as a result, he cannot support one of the following conclusions. Which conclusion is NOT supported? The native alga's fundamental niche includes dry habitats. The exotic alga's fundamental niche includes dry habitats. The native alga competitively excludes the exotic alga in dry habitats. The exotic alga competitively excludes the native alga in wet habitats.arrow_forwardIntroduction The Rock Pocket Mouse The rock pocket mouse, Chaetodipus intermedius, is a small, nocturnal animal found in the deserts of thesouthwestern United States. Most rock pocket mice have a sandy, light-colored coat that enables them to blendin with the light color of the desert rocks and sand on which they live. However, populations of primarily dark-colored rock pocket mice have been found living in areas where the ground is covered in a dark rock calledbasalt caused by geologic lava flows thousands of years ago. Scientists have collected data from a population ofprimarily dark-colored mice living in an area of basalt called the Pinacate lava flow in Arizona, as well as from anearby light-colored population. Researchers analyzed the data from these two populations in search of thegenetic mutation responsible for the dark coat color. Their analyses led to the discovery of a mutation in theMc1r gene that is involved in coat-color determination. The MC1R Gene Two pigments…arrow_forward
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