Plants are divided into either vascular or nonvascular groups. These two groups share some characteristics, such as cell walls, but there are several important differences in their structures. Nonvascular plants lack which of the following structures? true roots, chloroplasts, and stems
true roots, phloem, and xylem.
true roots, xylem, and cell walls
true roots, cell membranes, and flowers

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

b brown mice / white sand dunes

thinking it would be physical characteristics

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements