Answer:
the hereditary unit, gene
Trees "breath" in carbon dioxide and exhale oxygen during the morning, so they clean all the carbon dioxide that we breath out daily
But I have to warm you, tree does the opposite at night, if you sleep in a room with a lot of plants, you could be in danger because tree inhale oxygen and exhale carbon dioxide, they soon will consume all your oxygen XD
I need to see the chart to answer you
<span>element hydrogen joined to one atom of the element oxygen. there is a positive and negative side</span>
Reticulum nucleus this animal cell. Which organelle is labeled H