Biology, 16.12.2019 22:31, davfar334p47luq
Which parts of ancient animals are most likelyto have been preserved as fossils
Answers: 2
Biology, 21.06.2019 18:30, narutoxptheninja
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
Answers: 2
Biology, 22.06.2019 17:30, leilakainani26
What type of cell division is used to replace old cell?
Answers: 2
Biology, 22.06.2019 18:30, ryanbreland14
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
Which parts of ancient animals are most likelyto have been preserved as fossils...
Biology, 01.07.2019 00:40
Mathematics, 01.07.2019 00:40
Mathematics, 01.07.2019 00:40
Geography, 01.07.2019 00:40
Biology, 01.07.2019 00:40
History, 01.07.2019 00:40