Coral reefs are faced with many threats. some, like the crown-of-thorns starfish and sea urchins, are considered natural threats and some, like warming water temperatures and pollution, are considered man-made threats. do you feel that natural or man-made threats pose the biggest risk to the survival of coral reefs? why? what do you feel is a solution to the threat?

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

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.