1. Do you think this wing is from the left side or the right side of the chicken’s body? Explain your answer.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.