The name of the species that eliminated the wolves in Yellowstone so that they had to be reintroduced is <u>humans</u>.
In the olden times, people were unaware about the importance of natural ecosystems and the worth of each organism being part of an ecosystem. An expansion in an area caused the wild predators to come close to domestic livestock during the 1800's. The wolves began using these domestic animals as a source of nutrition. The humans, in order to protect their livestock, killed wolves.
It was as late as the 1970's when efforts started to being made to protect endangered species. These efforts caused the reintroduction of the wolves in Yellowstone.
To learn more about wolves, click here:
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Answer:
<em> a) There is a 25% chance that their next child will be Rh-.</em>
<em>b) There is a 3/8 chance for a Rh+ girl</em>
Explanation:
As we know from the question that Rh is a dominant gene. A person having only one allele for the gene will show its effect as it is the dominant character.
This means that for a person to lack the Rh factor, it shall not have any allele with the Rh factor.
To illustrate the result, lets draw a punnet square:
Rh+ Rh-
Rh+ Rh+/Rh+ Rh+/Rh-
Rh- Rh+/Rh- Rh-/Rh-
For the probability for it to be a girl, we know that there are 50-50 chances for the next baby to be a boy or a girl. The chance of being Rh+ are 75% for the next baby.
Hence,
3/4 multiplied by 1/2 is 3/8 ,which is the chance for the next baby to be a girl with Rh+ factor.
1.a.
2.b
3. i can’t read the graph, could you resend the image and i can answer it or just say what the y and x axis titles are
Answer:
serotonin
Explanation:
Recreational drug are drugs taken for enjoyment, or leisure purposes, they are drugs taken to altered state of emotions for pleasure, by changing the feelings, and emotions
examples are Alcohol, cigarette and cocaine
Serotonin is a chemical induced in the human body due to drugs taken. It help regulate emotions, feelings, appetite and digestion, sleep, and memory.
