Lex decides to examine the effect of fertilizer on the growth of tomato plants. Fie chooses four plants for his experiment and applies varying amounts of fertilizes to three of them. He does not apply fertilizer to one piant.
Over a 15-ay period, the plants receive fertilizer on Days 1, 4, 7, 10. and 13. Les measures the height of all of his plants with a metersick
on Days 3,6,9,12, and 15. He also makes sure to hold all experimental factors constant except for the fertilizer
What is the independent variable in Lexi's experiment on tomato plants?
the amount of fertilizer given to the plants
the days fertilizer was applied
the days plant height was measured
the measurements of plant height

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).

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?

Australopithecus robustus was likely the longest-surviving species of australopithecine in south africa. it had: a. large molars, a big face, and a sagittal crest. b. a large body, large teeth, and a sagittal crest. c. a big brain, big teeth, and a big face. d. a big face, large teeth, and a large body