C: oxygen
Step by step:
Let me get Brainly:)
Cohesion is the connection made between identical molecules while adhesion is the connection between different ones
<span>In the "all or none" law of muscle contraction, it states that when the stimulus applied exceeds threshold then the the nerve sending signals to a few muscle fibers will give a complete response; contraction. Graded response is dependent on how many motor units have been recruited. The more motor units, the greater the force in the contraction.</span>
As an overall average, about 10% of the energy at one trophic level is available to the next-highest rank in the food chain.
Answer:
antibiotics are useless against viral infections this is because viruses are so simple that they use their host cells to perform their activities for them. so antiviral drugs work differently to antibiotics by interfering with the viral enzymes instead
