Object 1 and 2 attract each other with a electrostatic force of 72.0 units if the charge of object is 1 halved then the new electrostatic force will be units

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

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation