Biology, 15.11.2020 02:40 tristantisdale1
Question one: why do stars change very little while they are in the main sequence stage? question two: why does a main sequence star eventually grows in size to become a red giant?
Answers: 1
Biology, 21.06.2019 18:30
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, 21.06.2019 19:00
Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5
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Biology, 21.06.2019 22:00
Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses
Answers: 1
Biology, 22.06.2019 01:30
Compare the composition of the moon's surface with the composition of the earth's surface.
Answers: 2
Question one: why do stars change very little while they are in the main sequence stage?
question t...
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