Trey and randall are conducting an experiment to test the effects of watering plants with deionized water compared to tap water. they take 20 plants of the same size and species, kept in the same area in front of a large window of their classroom, and water half with tap water and half with deionized water. all plants receive the same amount of water daily for three weeks. the plants watered with tap water grew an average of two inches taller. when they were finished, they reported their results in the school newspaper. would their experimental findings be considered valid scientific research? a) no, because they weren't working with a scientist. b) yes, because they have all elements of a valid experiment. c) no, because their work has not been reviewed by other scientists. d) no, because they didn't do enough research before their experiment.

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

What drives an advertising campaign?