Michael grows the same bacteria in 20 Petri dishes. He places 10 of the dishes in a container with a normal atmosphere (normal oxygen levels). The remaining dishes he places in a
container in which the oxygen level is double the normal level. He labels the first group "A"
and the second group "B".

What is the independent variable, the dependent variable, what were the constants in the name experiment?

Exit what always affects measurement error in an experiment? a. investigator bias b. variability in nature c. instrument precision d. misreading the instrument

According to the loco mass the mass of reactants and products

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species