According to lazarus, our first task when faced with a potential stressor is to estimate its severity and to determine whether it is a challenge or threat. this evaluation is referred to as a

   Primary appraisal

Explanation:  Richard Lazarus, a psychologist, gave a theory that stress has a two-way effect or action, a process. The first process is the production of something that makes us stressed by the environment, as well as our reaction to that stressor. This stressor can be an incentive for us because it can mean an opportunity for us, but it can also be a threat. We determine this on the basis of a primary appraisal, that is, assess the possible severity of the stressor in terms of the potential adverse effect, or the positive challenge that stressor may entail.

i think its toxic gasses but i could be wrong

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.