Available options:
i. Energy.;
ii. a giant earthquake;
iii. circulatory systems;
iv. organic molecules;
v. a tree falling;
vi. a huge fire;
vii. a great flood;
viii. Solar energy;
Given those answer options, answer the question: Fact 1: If a tree falls then sunlight becomes available to the surrounding plants. Fact 2: Plants use sunlight for photosynthesis. Given the two facts above, what can make photosynthesis more accessible to surrounding plants?
A:
v.