<span>The answer is D. Islam. Islam reached northern Africa in the 600s and continued to spread westward throughout the 700s until it reached the Iberian peninsula. Islam was expanded during this time by the military conquests of the Umayyad and Abbasid caliphates.</span>
<span>an increase in the width of the stem
in many vascular plants secondary growth is the result of the activity of the two lateral meristems secondary growth increases the girth of the plant root or stem rather than its length </span><span />
Answer: Increased the number of molecular collisions and increased the reaction rate
Explanation:
Darwin proposed an idea that all species change over time because those that are best adapted to their environments are able to survive and pass on their traits to their offspring. This became known as Darwin's theory of evolution. This historic insight was described based on his observations of the inhabitants of the Galapagos Islands.