Biology, 18.07.2019 15:30 arianaguerin
Sandy experimented with the placement of the straw and the balloon while making this air powered toy car. he taped the straw and balloon to face toward the right. he told tim that his toy will travel to the right. tim said that sandy was wrong. the toy will gradually spin in a circle. which boy was right and why? .
Answers: 1
Biology, 21.06.2019 16:30
25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?
Answers: 3
Biology, 22.06.2019 03:30
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Biology, 22.06.2019 12:30
This is the interaction of two organisms where one is and the other is neither nor harmed.
Answers: 1
Sandy experimented with the placement of the straw and the balloon while making this air powered toy...
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