Qué característica en la evolución de las especies se presentó para la aparición del pelo en los organismos terrestres

Which of the following conclusions can be drawn

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.