Thermodynamic arguments put the current number density of these background neutrinos at . If only one species of neutrino has mass, what must its mass be if it makes up dark matter

i would think it's food chain

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.