Answer:
a creation of new plant species
Epithelial cells are mainly used for protection; in the urinary tract, these tissue cells are used to protect the bladder from toxic urine. The tissue can also expand to hold larger quantities of urine.
Answer:
<em>experimental group</em>
Explanation:
In scientific experiments, an experimental group can be described as a group which is under study. In this group, an independent and dependent variable is present. An independent variable can be described as the factor which changes either naturally or which is being changed by the researcher. A dependent variable can be described as the variable which is under study and it might be dependent on the independent variable.
