Question: How do scientists identify the common ancestry of
related groups?
CER answer

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?