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- Calcium carbonate is used by corals, shelled organisms, and a variety of other marine creatures to construct tissue components. What is the impact of climate change on their ability to construct those components? Temperature increases have diminished available calcium ions in marine habitats Hydrogen ions have increased acidity and will bind to carbonate ions decreasing avialblity to build calcium carbonate shells Hydrogen ions increase basicity of marine waters and induce dissolution of calcium carbonate structures Ocean warming is causing reactions to speed up and shells therefore are thinner and weaker Shelled organism are a product of founder effectHydrogen bonding helps salamanders cling to different surfaces. Which of the following surfaces would a salamander have trouble sticking to? Oa polar surface a nonpolar surface none of the above a damp surfaceScientists from Temple University used radioactively “tagged” carbon dioxide to determine that spotted salamander embryos Multiple Choice benefit from carbohydrates produced by the green algae living in the jelly layer of the eggs. are consuming the carbon dioxide produced by the green algae living in the jelly layer of the eggs. are producing oxygen for the green algae living in the jelly layer of the eggs. receive no benefit from having green algae living in the jelly layer of the eggs. are consuming the oxygen released by the green algae living in the jelly layer of the eggs.
- In 1798, a stuffed platypus specimen was delivered to the British Museum. Reports that it laid eggs created much confusion. To modem biologists, a platypus is clearly a mammal. It has fur and the females produce milk. Young animals have typical mammalian teeth that are replaced by hardened pads of the bill as the animal matures. Why do you think modem biologists can more easily accept that a mammal can have some reptilelike traits than scientists who were considering this animal in the late 1700s?Which of the following feeding mechanisms do sponges and bivalves have? * fluid feeding no answer substance feeding filter feeding bulk feedingWhich of the following not only increases surface area for nutrient absorption, but also slows down passage of food through the digestive system to allow for a longer time for absorption? the glomerulus the endostyle the amphibian typhlosole the spiral valve the columella O the pneumatic duct
- If fish do not add or remove air from their air bladders the volume of their air bladders _____ when they descend from the surface to greater depths. increases decreases stays they same depends on whether they are physoclistous or physostomousLand snail and slugs use which of the following for gas-exchange? (mark all that apply) the radula the spiracles the gastric caeca nerdwax the tracheae the mantle the lung the gillsIf fish do not add or remove air from their air bladders their overall density _____ when they descend from the surface to greater depths. increases decreases stays they same depends on whether they are physoclistous or physostomous
- Part A) Ecology is defined as the interaction of organisms and their environment. An example(s) of environmental conditions is/are: temperature nutrients sunlight all of these. Part B)DR TJ freaks out because she doesn’t hear any cicadas singing in January. If she understood the biology of these animals she would know that was because adult cicadas do not emerge from underground until summer! Dr TJ should have a better understanding of the importance of ___ in studying ecology. timing spatial distributions none of these Part C)If I read 50 papers on phenotypic plasticity in sea stars and they all showed that these animals exhibit behaviors that allow them to persist under temperature stress, this would be an example of ____ in science. detection measurement repeatabilityEarthworms are known to consume which of the following materials except: O living plant tissues (roots) O microorganisms in the soil O organic matter O detritus4) Animals that undergo ecdysis, or molting, include nematodes and arthropods. Why do these animals molt? Group of answer choices shedding the exoskeleton allows the animal to move faster to escape predators the exoskeleton prevents them from obtaining oxygen their outer covering is made of a non-living substance shedding the exoskeleton makes the animal smaller, which makes it easier for the animal to hide from predators in crevices