Which describes breccia? a clastic sedimentary rock with angular particles a chemical sedimentary rock a clastic sedimentary rock with large, rounded particles a biochemical sedimentary rock

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

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.

What is turgor pressure, what causes it, and what does it do for a plant?