Rewrite the following statements correctly:- (i) plants with weak stem that spread on the ground are called herbs.

(ii) roots conduct water to the leaves.

(iii) the common salt is obtained from sea water by the process of condensation.

(iv) Graphite is the hardest naturally occurring substance.

How we perceive, use, study, structure, interpret, and react to messages of time is referred to as: ?

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.