Answer:
DNA is an example of the biomolecule nitrogen.
The answer to the question above is letter A. competition. The animals compete for their territories that is why they feel the need to mark the land by urine in order to discourage other animals claiming the same territory. Some of the animals doing this are cats and dogs.
Answer:
Which component of a thin filament binds to calcium once the calcium ion is released from the sarcoplasmic reticulum? The answer is Troponin.