Which is one way that an advance in biotechnology can produce unintended consequences that harm the environment?
1. patients using insulin pumps live longer than those without the pumps.
2. genes implanted into a species of plant can spread to other plants.
3. genetically modified plants require less water to grow.
4. pesticides can prevent insects from destroying crops.

yes

explanation:

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

you didnt put any of the following