The are charged and orbit the atomic nucleus

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above