Hope this helps. Answer is in photo below.
Answer:
D: It is a law because it is a statement of fact that does not need any more experimental support.
Explanation:
Answer:
Utah
Explanation:
As Central Pacific laid tracks eastward, Union Pacific was working westward and the race to Promontory Summit, Utah, where they would eventually meet on May 10, 1869, was on.
<em>Answer:</em>
<em>D. a signal; a chemical; auxin </em>
<em>Explanation:</em>
<em>Phototropism</em><em> is described as a phenomenon that involves the growth of a specific organism as an outcome towards a light stimulus. It is generally observed or found in plants yet occurs in a few other organisms, for example, fungi. The different cells that are being found on the plants that are placed far from the light posses a specific chemical known as 'auxin' that generally reacts when the "phototropism" occurs.</em>
