The answer is C, DNA sequences of populations that are closely realted
The Euglena was green because it had chloroplasts in it, just like plants. The body structure at the base of the tail that relates to this is the photo receptor. These two enabled it to photosynthesize food like plants, but it could also take food from its surroundings like animals.
C I did this question before
Water, proteins, and ions as well as waste such as co2. It is often a straw color and it makes up about 50-60% of the total blood volume
