Potato farmers in ireland during the mid 1800s all grew the same type of potato. the potato plants were all produced as clones of one another. when a fungus infected the crop all of the potatoes were destroyed. this occurred because these potato plants) a. had little genetic variability) b. had increase biodiversity) c. were the product of fertilization) d. were the result of biotechnology

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

What are some natural processes that represent physical and chemical changes?

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