Ibelieve z is the second because it looks like tissues, where has y is first because it's a cell, and the others look like organs or body parts.
Another question on Biology
Biology, 22.06.2019 00:30
If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?
Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses