The answer is D. Food Threshold is the amount of food capable on feeding the organisms.
Answer:
antibodies being produced to fight off a pathogen inside the body
Explanation:
Specific immune responses, also known as the adaptive immune system are ways the body fights against pathogens. The body is able to identify cells that are unique to it. When pathogens bearing an unknown identity enter the body, antibodies are released to attack the antigens on the surface of these pathogens.
The body usually develops this immunity after a previous attack by the pathogen. Lymphocytes known as the B and T cells are released by the immune system t engulf the pathogens.
The modern sea turtles emerged from a common progenitor about 110 million years ago and offered rise to 4 families of sea turtles.
<h3>What did the sea turtle evolve from?</h3>
Sea turtles grew from land and freshwater turtles, that lived about 230 million years ago in the Cretaceous period.
Even though our current turtle species has varied over time.
Thus, progenitor about 110 million years ago and gave rise to 4 families of marine turtles.
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