A. trees
<span>B. uranium </span>
<span>C. water </span>
<span>D. salt
</span>
Positive feedback , i’m pretty sure. why? well
It has to be C. Vascular bundles arranged in a ring. This is my chosen answer because only monocots have fibrous roots, but dicots have one main root called a taproot. Monocots have floral parts in multiples of three, but dicots have four or five. Monocots have parallel veins in leaves but dicots have branching veins. So the answer is C. Vascular bundles arranged in a ring. Hope this helps.
Answer:
C) The Calvin cycle requires ATP and NADPH, which require sunlight to be produced
Explanation:
The light-dependent phase of photosynthesis includes the photolysis of water molecules. The released electrons are passed to PSII to PSI via electron carriers and finally to NADP+ to reduce it into NADPH.
Transfer of electrons via electron carriers also generates the proton concentration gradient which in turn drives ATP synthesis. ATP and NADPH formed during light reactions are used in the Calvin cycle as an energy source and electron donor respectively.
Hence, to continue, the Calvin cycle requires the synthesis of ATP and NADPH in the presence of light.
