Flowering plants are the most successful group of land plants. this is due, in part, to the trait that could be the label for point c. in the cladogram. consider the organization of the cladogram. what trait, besides flowers, is unique to this group of plants? a) vascular tissue b) seeds protected by a fruit c) alternation of generations d) continuous spore production

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?