Answer:
Egg.
Explanation:
Technically speaking, dinosaurs were some of the first living creatures on Earth, and they laid eggs long before chickens were around.
Step 1. Simplify brackets

Step 2. Simplify
13
Done! :)
Your answer is A. 13 Hope this helps!
Invasive species is the easiest way to answer this, with invasive species the diversity will likely decrease
Rock moves outward, A crack forms, Magma pushes upward, Magma hardens