The platelets begin to clump together to help stop the blood flow.
Answer:
The correct answer is - a. water and water.
Explanation:
Water is the universal solvent as it is the most common solvent for almost most of the substances. Water mlecules are able to dissolve polar molecules that have partial positive and negative charge are readily dissolve in the water.
In the cell all ions and proteins are dissolve in the water which makes maximum part of the cytoplasm and acts as the solvent in the cytoplsm within the cell of an organism.
The bivalve that was a keystone in Iowa, making sure the water stayed clean and filtered, is shellfish.
<h3>What are shellfish?</h3>
Shellfish is a term used to describe the fishes that have exoskeleton and are used to eat.
The shellfish is divided into two groups:
- Crustaceans: shrimp, prawn, lobster, etc
- Molluscan/ bivalves: oysters, clams, mussels, etc.
So, the molluscan are believed to keep the water bodies clean
Thus, the keystone species is shellfish.
Learn more about shellfish
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I know i'm late but I'd go with all of them.
