Answer:
A possible explanation for this color change could be the acid present in the Snail slime has brought the color change.
Explanation:
- Snails are Gastropod molluscs.
- They secrete a mucus like watery slime to adhere to the surface .
- Snails also use their slime as a defense.
- Chemical analysis of snail slime suggested that it contains hyaluronic acid and glycolic acid along with other components.
- Thus we can state that snail slime is acidic in nature.
- In the given question it is stated that the blue solution turns yellow on adding a weak acid.
- So when the color of water changed from blue to yellow after 30 minutes, we can assume that the colour change was caused due to the slime secreted by Aquatic snail that was introduced into the tube.
This question is true, they are the only ones.
"was used by economist John Kenneth Galbraith to describe the prosperity of the 1950s" is the statement among the choices given in the question that is not <span>true of the phylogenetic tree. The correct option among all the options that are given in the question is the first option or option "a". I hope it helps you.
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Imprinting is the answer.