C. Are vascular is the answer
scientists can test differences of the area with pigmentation by observing which is lighter and which is darker however they use microscope to look the difference of the pigmentation over the cells.
Photosynthesis
During photosynthesis plants use up carbon dioxide and produce oxygen
I believe the answer would be <span>The musculocutaneous nerve innervates the flexor </span>muscles<span> of the </span>arm<span>, including the biceps brachii and brachialis </span>muscles<span>. ... Along the anterior of the </span>forearm<span>, the median and ulnar nerves </span>supply<span> nerve signals to the </span>skin<span> and to the flexor </span>muscles<span>of the </span>hand<span> and fingers.</span>
Answer: C). Extraction
Explanation:
Minerals are the inorganic susbtances obtain from the under surface of the earth crust. They are collectively found in the geosphere of earth.
The mineral formation is a long geomorphic process it does not involve any biological activity. After mineral formation mineral extraction is the next step in the resource cycle.
The extraction process involves mining techniques.
