Answer:
Explanation:
The test tube that first stops in bubbling or the production of a gas is the tube that contains the catalyst since the reaction ended faster than the others. A catalyst is known to speed up a reaction so it must the situation aforementioned is the answer.
Answer: Because we never see it illuminated by the sunlight.
Bird, bat, and butterfly wings are examples of convergent evolution. <span>This means that all of these wings share the same function and are similar in structure, but each evolved independently. Bird, bat and butterfly wings are analogous, which means that they have separate evolutionary origins, but are similar because of the natural selection that shaped them to play a key role in flight.</span>
Viruses are considered non-living because they do not have a biological machinery to replicate, and they do not have a metabolism.
They replicate by using the host cell
Virus do not consume energy to survive or regulate its own temperature
The substance that is not an element is water, it is formed by one atom of the element oxygen and two atoms of the element hydrogen.
The rest of the substances, iron, oxygen, carbon and hydrogen, are pure elements formed by equal atoms.