If a botanist wants to learn about a new method of crossbreeding orange trees so she can use the technique in her own experiments, what type of source should she use?

a. a secondary source, because it will include more data

b. a secondary source, because it is written by a scientist

c. a primary source, because it will contain more details

d. a primary source, because it will be easier to read

C. A primary source, because it will contain more details.

Explanation:

A primary source is the source which provides the first hand experience of an experiment, methodology, event and it considered to be authoritative, as it comes from the owner of the research piece. The primary source represents the thinking, discoveries and events which are original.

A secondary source includes the information which generates after the analysis, interpretation and evaluation of the information, or data from the primary source.

According to the given situation, as the botanist wants to learn about the new method of crossbreeding orange trees. The new method will be latest and may not be applied much by other scientist. Therefore, the source of information will be primary. It will contain more details.  

they begin to vibrate harder causing the material that was solid to turn into a liquid i.e gallium or ice

a electronegativity decreases beacuse the size of nucleus is bigger.