What types of substances are considered drugs?

stimulants (e.g. cocaine)

depressants (e.g. alcohol)

opium-related painkillers (e.g. heroin)

hallucinogens (e.g. LSD)

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: