Explain to John (from Card One) how even though the cologne was in his room, he was still able to smell it throughout the house. Include the term concentration gradient in your response.

Which of the following are true about bacteria? select all that apply. bacteria are all around you. bacteria can or harmful. bacteria are multicellular organisms. bacteria can only be found on the human body.

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

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