Much like auxin in a stem causes it to grow upward, the auxin in which structure makes it grow downward? flowers flowers leaves leaves roots roots gametes.

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?