When an atom transfers/ gains a valence electron, it gains either a positive or negative charge. in the Proces, becoming an ion. because of the negative/positive charge the two ions are now attracted to each other.
D. Myosin and actin do not fully detach, so the muscle cannot relax.
Depending on the organism, the cell can get its energy from the sun (Plant; Photosynthesis) or through ATP energy (Animal).
<span>aerobic respiration requires oxygen.</span>
Well, flowers give insects like bees and butterflies nectar. That's their food. In return, the insects spread the flower's pollen so that other plants like its type can be fertilized.
This is mutualism - a symbiotic relationship were two organisms benefit.
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