Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Answer explain why it is not possible to deduce a complete order of reactivity.