Answer:
2nd one is the most realistic of what occurs in ecosyystems
<span> </span><span>, electrons, are </span>found<span> in orbitals outside of the</span><span>nucleus hopes this help. have a great day
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B - Hydrogen Bond
A and D are incorrect as these are bonds either between metals and nonmetals or non metals and non metals. C is incorrect as this term is a joining of sugar molecules.
Hope this helps!
Answer:
Organ level– an organ is a structure composed of at least two different tissue types that perform a specific function within the body. Examples include the brain, stomach, and liver. Complex functions begin to emerge at this level.
Explanation: