Fact 1: Some touch receptors sense differences in temperature or pain. Fact 2: Touch receptors are free nerve endings or nerve endings that are surrounded by a capsule. Given the two facts above, what senses differences in temperature?

Possible answers:
(i) the skin;
(ii) Electric devices;
(iii) animals;
(iv) an electric stove;
(v) nerve endings;
(vi) an organism's body;
(vii) Most plants;
(viii) peachleaf willow;
The answer is:
(v)