In trees, tubes are found in the innermost layer of the bark, and they transport throughout the plant. A.
xylem; the products of photosynthesis
B.
xylem; water and dissolved ions
C.
phloem; water and dissolved ions
D.
phloem; the products of photosynthesis

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explanation:

is the dgjofgkg. huukkg u

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.