Astudent is conducting an experiment to determine what type of soil earthworms prefer, wet or dry. ten earthworms are released into a cardboard box that contains dry soil on one side and wet soil on the other. over 24 hours, the student records the number of earthworms on both sides every hour. what component of the above experiment is the dependent variable? species of worm usednumber of trials average number of earthworms in each type of soilsoil mosisture

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

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

As a small change in a person's dna can cause a genetic disorder