The Old field succession is a man-made secondary succession that occurs when a farmer stops cultivating their field for a lengthy period of time.
The definition of old fields, which has been a topic of discussion among modern ecologists for some time, is that they are an intermediate stage in the natural succession of an ecosystem moving towards its climax community. Many times, old field sites are marginal lands with poor soil quality that are unfit for pasture or farming.
The terms "grass and forbs stage," "shrub and sapling stage," "pole stage," and "mature forest" are frequently used by foresters to describe these stages. Forest succession is the process by which plant communities develop in a regular, predictable manner.
When a farmer gives up on a farm, the abandoned land quickly becomes overgrown with weeds and grass.
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I believe the answer to this would be A. True
as insects became exposed to pyrethroids, toxicity of pyrethroids weakened over time. which means that Most insects had the allele for pyrethroid resistance, but it remained masked. The allele for said pyrethroid resistance, evidently increased throughout the population.
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Answer: pancreas- secretes enzymes
Gall bladder- stores bile
Liver:makes bile
Salivary glands: found in mouth
Explanation:
Answer:
Letter C
Explanation:
The checkpoint proteins are specialized proteins that act during some specific points in the cell cycle in order to prevent some errors on the genetic material that is being duplicated. If the error is identified the cycle that is being made takes a halt by those checkpoint proteins.