Which of the following is NOT an important role for phytoplankton? A. they provide food for fish and other animals
B. they provide oxygen for the planet
C. they provide shelter for fish
D. they reduce carbon dioxide in the atomosphere

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.

All ova contain sex chromosomes corresponding to: x y xx xy