Which of the following are the reasons for pouring used acids and alkalis into waste bottles instead of the sink? (1) acids and alkalis may corrode the pipes.
(2) acids and alkalis are harmful to the environment.
(3) acids and alkalis should be collected for treatment before discharge.
A (1) and (2) only
B (1) and (3) only
C (2) and (3) only
D (1), (2) and (3)

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation:

∠gdh and ∠edh on edg.

answer is c