According to the research presented in the Critical Thinking box on smoking and psychological disorders, nicotine is implicated in psychological disorders because:

A. nicotine affects many of the same neurotransmitters and brain areas that are involved in mental disorders.
B. people with schizophrenia or depression tend to have abnormally high threshold levels for responding to nicotine.
C. nicotine is a toxic chemical that suppresses the release of dopamine and other neurotransmitters that are necessary for normal mental functioning.
D. people with psychological disorders tend to absorb more nicotine from cigarettes than other people, making it easier for them to become addicted to nicotine.

Read the list of selections from the article. trump still seeks a border wall and said he might shut down the government again over it. a strong majority of americans blamed him for the standoff. and they rejected his arguments for a border wall, recent polls show. it is not clear how trump would fund the wall by declaring a national emergency. minutes later, senators voted 52-44 for a democratic plan to open agencies through february 8 with no wall money. that was eight votes short. yet it got more support than trump's republican plan, even though republicans control the senate 53-47. which two selections, taken together, provide the best evidence to support the idea that most people do not support funding a border wall? a 1 and 3 b 1 and 4 c 2 and 3 d 2 and 4

Catherine sat down will all of her income details from the past year to calculate the total income she had in that period. after she created a consolidated income statement, she deducted some tax-exempt income details from the statement. what term would catherine use for this final income calculation?

Which organelle is marked with an x?