Answer question 1 or 2 or both
1. name at least two extinct species that share a close evolutionary relationship with humans.

2. explain the similarities and differences that exist between these species and humans. is the fossil record complete for humans? explain your answer.

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water