Xavier used a chart to list the roles of two different molecules in protein production
Protein Production
Y
brings amino acids for the
ribosome to link together
stores the information for
protein synthesis
Which headings best complete the chart?
OY: DNA
Z: tRNA
OY: TRNA
Z: DNA
OY: mRNA
Z: tRNA
O Y: tRNA
Z: mRNA
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The correct answer is:       [c]:   "organisms that are sensitive to changes in temperature would die. "

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.