Answer:
c.
Explanation:
The definition of a homologous structure is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose. An example of a homologous structure is the human arm as compared to the wing on a bird.
looked it up hope it helps
Answer:
Circulatory system: Includes the arteries
Pumps blood
Includes the heart
Raspatory system : Provides oxygen to the blood
Preforms breathing
Includes the lungs
Explanation:
The answer is Nitrogen fixation
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You can test the different between using less eggshells and more eggshells and record the data to see which one works better
Answer:
C
Explanation:
a difference in the pH of an environment changes enzymes activity
