Ammonoids are good as index fossils because of the following characteristics;
<span>1.
</span>Their abundance and vast distribution across most shallow
marine waters during the periods
<span>2.
</span>They have easily recognizable
features, such as shells and the highly crenulated and complex suture, that are well preserved in rocks
<span>3.
</span>Their rapid
evolution that can assist determine changes and variations in the then environment
Answer:
A control group is a set standard so that comparisons can be made to see what your experiment did. The experimental group is the group that has been changed. A control group also allows you to determine your variables.
Explanation:
The answer for that question is A
I think it is C, since it does occur on land life, and I think it also occurs in marine life.
Osmosis would happen when the semipermeable membrane separating two parts would be permeable to desired the solute. It is a process of passing through solute molecules through a membrane with concentration gradient as the main driving force.
