The orchid family is one of the largest families of flowering plants. there are twice as many species of orchids as species of birds. there are four times as many species of orchids as species of mammals. charles darwin wrote a book about orchids in 1862. the book studied the way in which orchids evolved to attract birds and insects. it is suggested that for every different type of bird or insect, there was an orchid that matched in appearance. this in-depth study on orchids darwin develop his ideas on evolution. orchids can survive almost anywhere—even underground. the only place they cannot survive is in glacial regions, like antarctica. they grow best in tropical regions that are hot and humid. some scientists believe that orchids have been around since the time of the dinosaurs. 5 which one of these details is most important to include in a summary of this passage? a. charles darwin wrote a book about orchids in 1862. b. orchids can survive almost anywhere—even underground. c. there are four times as many species of orchids as species of mammals. d. they grow best in tropical regions that are hot and

Endogamy is marriage within one’s own social category. select the best answer from the choices provided true or false

Banks offer services such as checking and savings accounts. what do banks do with most of the money they receive in deposits from customers? a) they loan it out to other customers. b) they spend it on new banks in other places. c) they keep it in a locked, secured vault in the bank. d) they send it to the federal reserve in washington, d. c.

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.