In an elastic collision kinetic energy is transferred from one particle to another but the total kinetic energy remains constant is this always true ? some times true ? or never true ?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

How have the greenhouse gasses increased from the year 2000 to 2018

Which type of fossil does this image depict?