Answer:
It has the right amount of all essential things.
Explanation:
has the right amount of oxygen, gravity, food resources and systems (photosynthesis, cellular respiration,etc.)
Answer:
the answer B...................
The correct answer for this question is "shaded square." The symbol that would the horse breeder use to show a male who is affected by a defective gene is the shaded square. <span>Pedigree charts use shaded symbols to show organisms that have a particular trait, such as a defective gene, being traced in the chart. </span>
