MTD. Make a model answer for this question in your books
___________ has increased overall
___________________ decreased overall
water vapour has ______________ overall
carbon dioxide small increase over last ________ years
carbon dioxide decreased due to and oxygen increased due to___________________
(carbon dioxide + water -> sugar + oxygen in the presence of light)
water vapour ______________ to form the oceans
carbon dioxide ______________ in the oceans
carbon dioxide formed ________________ rocks (limestone)
carbon dioxide formed fossil __________
carbon dioxide increased by __________ activity
carbon dioxide increased from burning of ___________ fuels