Biology, 13.04.2021 02:10 lulprettyb
Why are Australian mammals all marsupial while mammals on other continents are mostly placental? Group of answer choices When the continents separated from one another, marsupials in Australia did not have the placental competitors that were present in the Americas. Australian mammals have a different common ancestor than mammals elsewhere in the world. Marsupials outcompeted the placental mammals in Australia. The placental anatomy is better adapted to the environments of North and South America than is the anatomy of marsupial mammals. The marsupial anatomy is better adapted to the environments of Australia than is the anatomy of placental mammals.
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Biology, 21.06.2019 18:50
Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide
Answers: 3
Biology, 22.06.2019 10:00
With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.
Answers: 1
Biology, 22.06.2019 11:00
Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?
Answers: 2
Biology, 22.06.2019 18:30
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
Answers: 2
Why are Australian mammals all marsupial while mammals on other continents are mostly placental? Gro...
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