Quick Answer. Collagen is the protein that all animals have in common, even single-celled animals and creatures such as sponges that lack differentiated bodies. Collagen is a cable-like protein that can calcify into bone, shell or other hard structures.
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Answer:
Here's what I get
Explanation:
Per the above explanation, pH means "power of hydrogen ions."
The concentration of hydrogen ions is a measure of the acidity of a solution. A higher concentration represents a more acidic solution.
The definition of pH is
pH = -log[H⁺]
Thus, pH is a measure of the hydrogen ion concentration.
The more negative the pH, the greater the Potenz of hydrogen ions.
Answer:
Excretion is the removal of material from one living thing, for example. Humans excrete tears, sweat, carbon dioxide etc.
Secretion is the movement of material from one point to another, for example. Humans secrete enzymes, hormones, saliva etc.
Basically in summary excretion is the removal of physical material and secretion is the movement of biological materials from one point to another.
I hope this was clear enough lol
I believe it’s the y variable.
