What have astronomers detected that is related to the cooling and expansion of the universe?
A...
Biology, 04.05.2020 22:52 mucciak8356
What have astronomers detected that is related to the cooling and expansion of the universe?
A. colliding galaxies
B. lots of distant white dwarfs
C. the Cosmic Microwave Background Radiation
D. a supermassive black hole in the center of our galaxy
Answers: 2
Biology, 21.06.2019 16:00
Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove
Answers: 2
Biology, 21.06.2019 19:30
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Along what geographical feature are most of the oil producing regions located
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Biology, 22.06.2019 12:30
In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids
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