to determine whether a cause-effect relationship exists between two variables, a researcher must use:

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans

How would the function of synovial joints be changed if they lacked joint cavities and the bones were united instead?