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the kingdom of multicellular organisms that contain chlorophyll and make their own food by photosynthesis. Plants have cell walls that are made of cellulose and hemi-cellulose. They reproduce asexually and sexually.
an alkaline watery fluid containing digestive enzymes, which is secreted into the mouth by...
atmospheric gases, especially carbon dioxide, methane, nitrous oxide, ozone and water vapour,...
tough cartilage that acts as a shock absorber between vertebrae and at the ends of bones in ball...
a multi nucleate (many nuclei) cell resulting from cell fusions of uninuclear cells.