Gradual changes in the frequency of diseases over long periods are known as SECULAR TIME TRENDS. For example, the rate of mortality in USA due to coronary heart diseases over a period of time. Onset of puberty in girls is also a secular time trend.
Secular time trend is also referred as Secular Variation and Secular Drift.
A niche is an organism's role in a community.
What it eats, Where it eats, When it eats, and its job in that environment.
Just like the bacteria, the archaea have evolved a diverse array of metabolic pathways. As extremophiles, their metabolism shows many adaptations to the extreme environments of their habitat. There are facultative and obligate anaerobes and aerobic organisms in this kingdom.
Amino acids make up proteins, and proteins are needed for proper growth in humans. They’re essential because, without them we wouldn’t have the nutrients we need to survive. I hope this helped!
Here is how biologist study concept maps.
BIOSPHERE:
<span>ECOSYSTEMS:
</span>
COMMUNITIES:
POPULATIONS:
<span>ORGANISMS: </span>
ORGANS AND ORGAN SYSTEMS:
<span>TISSUES: </span>
<span>CELLS: </span>
ORGANELLES:
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