Which statement describes all living things? a) they must reproduce sexually. b) they are composed of one or more cells. c) they are capable of making their own food. d) they have organ systems to carry out the processes of life.  hint {the subject is science}

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol

Fred is studying a substance that is made out of only one element. this means that

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.