Which method of heat transfer transmits heat from the lower layers of air to the upper layers of air? a
Conduction, because the warm and cool air particles move from their positions

b
Conduction, because medium particles move and bump into each other during heat transfer

c
Convection, because warm air over land rises up and is replaced by upper layers of cooler air

d
Convection, because electromagnetic waves carry the warm air over land to the cooler layers of atmosphere

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came 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

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false