Describe an experiment to demonstrate that light travels in a straight line​

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

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.

9. wind power creates pollution. water air soil noise