Humans have a lot of homologous structures in common with other animals, and several of these structures are no longer in working order in human bodies. These nonfunctioning structures are called vestigial structures. They still show evidence of common ancestry, but they do not do the same things in humans as they do in other animals
Listed below are mostly vestigial structures. Select the one that serves a purpose in humans.
ear muscles ability to wiggle ears in humans versus rotating ears to hear predators in prey animals like
deer and rabbits
pelvis: supports upper body and attaches to lower body in humans versus being tiny and nonfunctional in
legless animals like whales and snakes
tail tail bone in humans versus long tails for balance and communication in other animals like lizards and
wolves
hair raising goosebumps in humans versus raising hackles to appear larger and aggressive in other
animals like cats and monkeys
Answers: 1
Chemistry, 22.06.2019 17:10, glitterpanda2468
Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth
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Chemistry, 23.06.2019 06:00, wirchakethan23
When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.
Answers: 1
Humans have a lot of homologous structures in common with other animals, and several of these struct...
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