Ok idk if this is health or not but here we go lol. How do I feel happy?

Like I just get random waves of sadness and I feel like I’m going to cry. I just want happiness explained to me or what the waves of sadness mean.

What should you do if you have an anxiety attack when your parents aren't home?

Which of the following could use reverse transcriptase to transcribe its genome? a) ssrnab) dsrnac) ssdnad) dsdna

Marcus's genotype for eye color is bb. olivia has brown eyes, but she is heterozygous for the trait. what percentage of the children have blue eyes? if violet has green eyes and jonas has brown eyes, what is claudia's genotype? how many people in the family have blue eyes?