Humans were the species that originally eliminated the wolves in Yellowstone so that they had to be reintroduced.
I was in the year 1800 that an expansion in an area caused native predators and preys to come close the the domestic livestock. The wolves, being predators, began to feed on the domestic livestock due to its abundance and closeness.
To stop the wolves from feeding om domestic livestock, it were the humans who became the reason for wolves being eliminated. The people in those times were unaware of the natural understanding of ecosystems and hence considered wolves to be a threat.
It was in the 1970's that national awareness was made to protect endangered species. Hence, an effort was the made to reintroduce the wolves into Yellowstone.
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Hello. You forgot to enter the answer options. The answer options are in the figure attached below:
Answer:
the option D is the right answer.
Explanation:
Option D shows a pathway where activation of the receptor would lead to an increase in gene expression. This is because in this option we can see that the transcription regulator is decreasing gene expression, but there is a receptor that is activated and that has the ability to inhibit the pathway, allowing the selected gene to be expressed efficiently. This is because the pathway shows two inhibitory steps, when this happens an activation is performed.
Answer:
Explanation:
The materials that are useful are bamboo, plastic, steel, concrete, fabric , textiles, stones, brick, repurposed wood e.t.c.
Materials become useful, when those that uses it use it right and to achieve a specific purposes base on the properties the materials poseses.
The materials that are harmful include asbestos, Mercury containing devices, lead based paints, household hazardous waste, light system, mold, refrigerant containing system.
Materials become harmful when they contain substances or properties that is dangerous or can harm human beings and cause damage to cells.
Answer:
The most radioactive purified biological molecule will be RNA
Explanation:
RNA (ribonucleic acid) like DNA, is a long, unbranched macromolecule consisting of nucleotides joined by 3' - 5' phosphodiester bond.
In the cultured yeast, RNA is the most radioactive purified biological molecule because RNA is normally single stranded and does not undergo mutation, replication nor transcription.
Hence, it conserves the ultraviolet light absorbed from the radioactive phosphate during the culturing of yeast
