An earthquake occurs when magma travels from the magma chamber through the pipe and out through the vent.

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

Anita thinks that she has heterozygous alleles for red hair.if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above