Xylem and phloem are the two main transport systems in plants. which one of the following statements correctly describes the function? A)Phyloem Carries water and nutrients from the leaves to the roots\
B) xylem carries water and nutrients from the roots to the leaves
C) xylem carries sugars from the leaves to the roots
D)phloem carries sugars from the roots to the leaves
*this is science*

How does deforestation affect the water cycle? a. it increases the amount of runoff b. it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.