Hi, thank your for posting your question here at Brainly.
The white stringy substance surrounding the fish may be one of these many choices. It could be an <span>euglena, amoeba, </span><span>water mold or </span><span>dinoflagellate. All of these are protists with the same white characteristic.</span>
-Homologous structures in different organisms
This is called the G1 phase I'm sure.
A. prevent cross-contamination.
Explanation:
first of all our eyes recognise to train and send the message to our brain then our ears and then the brain send motor impulses to muscles of leg