Answer:
Used cross breeding to purposely breed plants. Studied a variety of pea plant traits. studied several generations of pea plants.
Explanation:
In summer they're cooler and during winter they're warmer
Organelles(or-gahn-lś)
Specifically means little organ but is sometimes commonly used as the Rank below the tissue in the cell body..They live inside the cell taking care of most of our bigger organisms. :)