In order for nitrogen to be usable for life it must first be

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

18. how do the cells in meiosis differ from the cells in mitosis?