Gawain: Itala Mo! Panuto: Magtala ng mga artifacts o mga lumang bagay na matatagpuan sa loob ng
tahanan. Maaaring magtanong sa mga magulang o nakatatanda. Lagyan ng
tsek ang hanay na kumakatawan sa haba
ng panahong itinagal ng bagay.

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii