C: oxygen
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What is the effect of a lack of nitrate ions on plant leaves?
What are the signs of magnesium deficiency and nitrogen deficiency in leaves of plants? 1 purple spots on leaves 2 re…
When carbon dioxide is being used in photosynthesis, what is its diffusion pathway in a leaf after entering a stoma? …
Table 5.1 shows a number of processes that occur in the lungs and thorax (chest cavity). [Table 5.1 showing processes…
Describe the differences in structure and function between a cell wall and a cell membrane.
Seeds require certain conditions before they will germinate. List these conditions and, for each condition you mentio…