Answer:
hydrogen
Explanation:
Honestly, I don't know why DNA is held by hydrogen bonds, but I know that's the answer to your question.
Hope this helps :)
The answer is scientific question
The number post-reproductive age group will decline in number in a population pyramid.
<h3>What is a population?</h3>
A population is a group of organisms of the same same specie living in a defined area of a given habitat.
A population pyramid shows the number of organisms of age groups in a population.
The post-productive age group is characterized by individuals that are too old to have children.
Since they are too old to have children, the post-reproductive age group will decline in number.
Learn more about population at: brainly.com/question/25896797
Answer:
<h2>a) Ran out of food</h2><h2>c) A disease spread across the population</h2>
Explanation:
The appropriate answer for this is insufficient food and accumulation of toxic material( disease spread across the population).
<h3>It is the lag phase of growth. In this phase cell death is greater than cell production. This happens when there is insufficiency of food and accumulation of waste material of bacteria that are toxic for yeast, and result in cell death.</h3>
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They transfer energy parallel to the wave