Which words describe an air mass likely to be over the northern parts of the Pacific Ocean?

a warm and dry

b cold and dry

c wet and warm

d wet and cold

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.