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.  

preservation because he preserves part of the land and preserves means save

explanation:

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.