Photosynthesis requires a supply of CO2 as well as H2O and sunlight. How do plants obtain these resources?

(Hint: refer to plant anatomy.)

Water through their roots and CO₂ through their leaves.

Explanation:

Plants get water from the ground through their root system and carbon dioxide from the air through their stomata —  tiny pores in their leaves that allow gas exchange.

it is b

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nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides