Answer:
Ciliary muscle
Explanation:
Muscle that changes the thickness of the eye lens through contractions and relaxations
Answer:
with traits best suited to their current environment
Explanation:
Natural selection proposes that nature selects those organisms that are well adapted to the prevailing environmental conditions to survive and reach reproductive maturity with the favourable characteristics being passed on to the offspring. Those organisms that are poorly adapted die leaving no offspring and their traits are eventually eliminated.
