One living thing a group of them makes up a population

How does friction with the atmosphere affect the speed of an artificial satellite

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?

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids