Gradually increasing duration and intensity of activity is formally referred to as what

Vertebrates have this type of circulatory system: wut i it owo

1. which statement about individual dating is true? ? a. wants to people start dating they must stay in a lifelong commitment b. once to people start dating they must refuse to date others c. there is less pressure for sex in individual dating then in group dating d. going on an individual date can lead to meeting a special friend 2. which example shows a consequence? ? a. getting pregnant after having sex b. denying someone from having sex c. kissing someone on the first date when he or she doesn’t want to be kissed d. going for a walk when one person wants to go out but the other wants to stay home 3. which consequences of having sex is social? ? a. getting an std after having sex b. getting pregnant c. feeling anxious about possible being pregnant d. refusing to meet new people plzzz hurry

Protein is a primarily building block of