(Q).
If amirror is used for reflecting images, then mirrors are used for reflecting what? Answer choices: - Joules - television - a wave - photons - streams - the Sun - images - fire
(A).
images

(Q).
If cO 2 concentrations in the air have increased over the last decade dramatically, then what has increased in the air dramatically over the last decade? Answer choices: - oil - sugar - coal - Cars - H2O - CO 2 - He - O2
(A).
CO 2

(Q).
If zinc is correlated with wound recovery, then what is linked to wounds recovering faster? Answer choices: - warmth - Zinc - heat - ferns - O3 - fever - energy - fibers
(A).
Zinc