They are things your body cannot produce on it's own
Planarian<span>, </span><span>any of a group of widely distributed, mostly free-living flatworms of the class Turbellaria
These are elongated and ciliated
Mouth is middle of the body
hope it helps</span>
Answer:
C. Geothermal
<em>I Hope im correct ^^</em>
Two ethical issues of using Biotechnology are Affordability and Privacy. Two social issues of Biotechnology are Harm to the environment and Bio-terrorism.
<u>EXPLANATION: </u>
- The most concerning ethical issue of using biotechnology is the cost and access to new treatments.
- The drugs that break clots that cause heart attacks, for example, are extremely expensive and so the common people cannot afford them.
- The second ethical issue is Privacy.
- The technology can decode the human genome which might reveal the future health information of a person.
- The first social issue of using biotechnology is the harm to the environment.
- It is not sure how will the ecosystem react when a new organism is introduced in the ecosystem.
- Another social issue is that terrorists might make new superbugs or infectious viruses, using biotechnology, which might not have any cure.
The correct answer is C. To store gastroliths that physically grind up food.
Explanation
The gizzards, are a special part of the digestive system of some animals such as birds, fish, and reptiles whose main function is to crush the food that the animal ingests, for this task, the gizzards contain in their interior gastroliths, a kind of polished stones, that grinds the food that the animal eats. The gizzards represent an important part for these animals because many of them do not have teeth to crush their food and feed on it. So, the correct answer is C. To store gastroliths that physically grind up food.
