(Q).
Q: What do electromagnetic receptors detect? Choices: - dangerous radiation - background radiation - subtle radiation - electromagnetic radiation A:
(A).
electromagnetic radiation

(Q).
Q: What is defined as a close relationship between organisms of different species in which at least one of the organisms benefits? Choices: - co-operative - endosymbiosis - parasitic - symbiosis A:
(A).
symbiosis

(Q).
Q: What force includes forces of attraction and repulsion? Choices: - centripetal force - gravitational force - molecular force - magnetic force A:
(A).
magnetic force