What is necessary for a convection cell to be set up in a fluid?

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.

What are potential sources of error in marta’s experiment