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a) What process is responsible for the movement of carbon dioxide into a leaf?
b) In what conditions might the same process cause oxygen to enter a leaf?
(a) Diffusion is responsible for the movement of carbon dioxide into a leaf.
(b) Oxygen will disperse into a leaf when the concentration of oxygen inside the leaf is lower than its concentration in the air outside. This might happen in low light intensities when the rate of respiration exceeds the rate of photosynthesis.
A friend of yours suggests that the origin of life on earth is extraterrestrial in origin (an idea known as panspermia). Can you propose a testable hypothesis to determine if this
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Agroup of realated genera are classified as-?
Percent solutions are made on the basis of g/ml or ml/ml of diluent, and it is usually assumed that 1 ml of water = 1 g of water. For example, 20 g/100 ml of water or 200 g/1000 ml
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