Periodontal diseases in teeth and osteoarthritis are common problems that show up on skeletal remains.
a. true
b. false

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

airlines i think? or a cruise boat? does this work out for u? ?