If chargaff's equivalence rule is valid, then hypothetically we could extrapolate this to the combined genomes of all species on earth (as if there were one huge earth genome).

in other words, the total amount of a in every genome on earth should equal the total amount of t in every genome on earth.

likewise, the total amount of g in every genome on earth should equal the total amount of c in every genome on earth. calculate the average percentage for each base in your completed table.

do chargaff's equivalence rules still hold true when you consider those six species together?

yes . A approximately equals to T and G approximately equals C in average.

Explanation:

according  to Chargaff's equivalence rule

the number and concentration of adenine is similar to the number of thymine and number of guanine is similar to that of cytosine in the DNA.

so according to conditions given in the question i.e average amount of A should be equal to average amount of T and total average amount of G in every genome on Earth should equal the total average amount of C . so Chargaff's equivalence rules still hold true when you consider those six species together.  

can you give me more to work here with plzs and you

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.