which highest-ranking taxa would a multicellular organism belong to when it has a nucleus and a cell wall, and can make its own food?

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

How do you date a sample of rock that you suspect as being one of the earliest on earth

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.