The regularity of basic functions such as hunger, excretion, sleep, and wakefulness is known as <span>dimensions of temperament; rhythmicity.</span>
D. <span>controlled
is the right answer because a</span><span>n </span>experiment<span> in which an observer tests a hypothesis by looking for changes carried by alterations to a variable.</span>
B, metals, nonmentals all bond to be stable
Animal dander would be the answer you're looking for.
Hope this helps :)
