O Facial expressions - How you look in front of your audience based
on your face can affect how they perceive you. If you are nervous
and cannot control it, your fear often shows on your face. If you
smile at them while you talk, they will think that you are happy
talking to them.​

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Which prefix mean under less or below

Why can cancer in the lymph nodes (lymphoma) be particularly dangerous? a. the lymph node's ability to produce cancer-fighting lymphocytes would be compromised. b. the lymph node's ability to produce cancer-fighting lymph would be compromised. c. the lymph nodes produce lymph, which nourishes growing cancer cells. d. the lymph nodes produce chyle, which nourishes growing cancer cells.