Ineed with question 52 which is describe the relationship between seasonal change in the northern hemisphere and the position of the suns vertical rays striking earth and it’s very hard and i’m struggling with it

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

What is the period of cell life when it is conducting

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.