Organisms can be made up of many , which could be arranged into , which can make up , organs can be part of an . These are ___ .

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Drag each label to the correct location on the chart. match the function to the type of tissue