Make a molecule between 11Na and 2He and name it

The correct answer is - Na2He, Disodium helide

Explanation:

The given elements of 11Na and 2He form a molecule that is stable above 113 gigapascal pressure where noble gas helium contains 2 electrons in the outer shell combine with sodium is group 1 metal. The molecule is called the disodium helide and represented as Na2He.

The correct answer is - Na2He, Disodium helide

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.