A student sets up the experiment shown in the diagram to the right to investigate how friction affects the motion of a toy car. 29. The student releases the car down the ramp and measures how far the car travels. Which variable must the student change to test how friction affects the motion of the car? (S8P3b)

The response is the basis for vaccination. primary secondary tertiary none of the above

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.