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: the looseness of soil increases the amount of oxygen in that soil. 
Fact 2: Oxygen in the soil is vital for healthy roots.
Looseness of soil increases the odds of healthy roots.

Fact 1: the surface of a beach is formed by mechanical weathering. 
Fact 2: Beaches and Sand Dunes Dunes are accumulations of sand blown from the beach by the wind.
sand formations are formed by wind.

Fact 1: Animals may compete for territory, water, food, or mates. 
Fact 2: Animals and plants compete for energy, water, and space.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
animals compete for territory.

