Which of the following explains darwin’s theory of natural selection? a. more recent species of organisms are changed descendants of earlier species. b. individuals in a population with traits best suited for that environment survive and increase in number. c. present organisms are related to and descended from past organisms.

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

About __ of the mass of the cell is water

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