Leg bones in whales would be an example of: A:Vestigial structures B:Derived characteristics C:Analogous structures D:Homologous structures​

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

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2