Biology, 02.02.2021 17:20 cheergirl2133
Scientific theories and models change over time. In the second century, Ptolemy, who lived in the Egyptian town of
Alexandria, produced a mathematical representation based on observation of the known solar system, Ptolemy's model
is called geocentric because the Earth was at the centre with the Sun and planets revolving in a series of circular
orbits around the Earth. Copernicus reconstructed Ptolemy's model 1200 years later, producing the heliocentric model,
with the planets orbiting the Sun. This model differs from models we see today thanks to the discoveries of other
astronomers. How has the heliocentric model been amended?
A
Newer models show the speed of each planet as it spins on its axis in
Space
B)
The planets orbits are not modeled as concentric circles around the Sun
but rather as eltipses
The order of the planets as the orbit the Sun has been modified due to
technological advancements
D)
Astronomers have determined that the outermost planets have different
Shaped orbits than the innermost planets
Answers: 3
Biology, 21.06.2019 19:30, seawu
Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable
Answers: 1
Biology, 22.06.2019 14:30, kiwe595
Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.
Answers: 1
Scientific theories and models change over time. In the second century, Ptolemy, who lived in the Eg...
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