The currently used binomial nomenclature was developed by .

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

An easy way to calculate the amount of energy available at each level is to what?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?