Combine the given two facts to write a concluding fact. Note that there should be some parts of the first and second facts that are not mentioned in this conclusion fact. Your combined fact should be the result of a chain between the two facts. Chains form when two facts connect together to produce a concluding fact. An example of a chain is: "pesticides cause pollution" (fact1) + "pollution can harm animals" (fact2) → "pesticides can harm animals" (conclusion fact). Parts of the concluding fact overlap with the first and the second fact. To construct such a  concluding fact, a useful way is to borrow the subject from one fact and the ending conclusions from another fact.

Fact 1: Most invertebrates have a more complex nervous system. 
Fact 2: Cephalopods have the most advanced nervous systems of all invertebrates.
Cephalopods have a complex nervous system.

Fact 1: Steroid hormones are made of lipids, such as phospholipids and cholesterol. 
Fact 2: Lipids Lipids are diverse hydrophobic molecules.
Steroid hormones are made of diverse hydrophobic molecules, such as phospholipids and cholesterol.

Fact 1: an organism requires energy for growth. 
Fact 2: Energy is carried in the form of an ATP molecule.

An organism requires ATP for growth.

