1). sammy was a normal, healthy boy. there was nothing wrong in his life to indicate that he was in anyway different from anyone else. when he completed highschool he obtained a job in a factory where he operared a large machine press. one day, his hand got caught in the press and was cut off. it was replaces with an artifical hand that looked and operated almost like a real hand.
is sammy alive? yes or no
explain the reasoning

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.

20 the main source of energy for our planet comes from the