Oxygen and hydrogen make up water
Answer:
pollution
Explanation:
The correct word would be pollution.
<em>Pollution can be described as the presence of ecologically harmful substances in the environment. </em>
Littering the ground is considered pollution because it is harmful to the environment in the long term. Harmful chemical in water is outrightly considered pollution because this will hurt the organisms living in the water and rendered the water unusable to those around it.
The theory of evolution proposed that a series of catastrophes or mass extinctions followed by repopulation could explain why species change over time
A polypeptide is a chain of amino acids. The completed polypeptide chains come together to form proteins, so be careful not to get them mixed up!
Hope this helps!
