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kirill115 [55]
2 years ago
6

mount saint helens erupted several times between may and august 1980 what lesson did the eruptions teach scientists

Biology
1 answer:
Elanso [62]2 years ago
3 0

The eruption of Mount St. Helens provided a prospect for the scientists to examine the effects of the catastrophe. In the eruption, the losses were tragic, however, after the incident, the geologists hugely bettered their tendency to determine eruptions, by safely evacuating thousands of Filipino people prior to the eruption of Pinatubo in 1991.  

Scientists also started to learn various other valuable lessons, even some of them have defied the fundamentals of evolutionary thinking. The eruption of 1980, offered a natural laboratory for comprehending that how quickly the catastrophic procedures can reshape the globe, and how briskly wildlife can recover.  


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At the end of the term, the professor locks the students in the classroom with plenty of food and water and leaves them there fo
levacccp [35]

Answer:

a. 0.7

b. 0.3

c. Yes

d. 90

Explanation:

As the random mating population was escaped from external evolutionary forces such as mutation, natural selection, and migration, the gene frequency will not change over time. The population will be at Hardy-Weinberg equilibrium throughout the time.

<u>As the number of sleepyheads (recessive trait) was 90 out of class of 1000 students at the start of course.</u>

<u />

q²=0.09 ∵ fraction of sleepyheads = 90/1000 = 0.09 denoted by q²

q that is the recessive gene frequency will be equal to 0.3 (by taking square root of P²

Hence, <em>allele frequency of a allele is 0.3</em>

<em></em>

As, frequency of dominant allele A is denoted by letter p and p+q=1

∴ p=0.7 As p=1-0.3

Hence,<em> allele frequency of A allele is 0.7</em>

<em></em>

Counting the probability of aa alleles (sleepyheads);

As a= 0.3

∴ aa= 0.3×0.3 = 0.09 (In terms of percentage, it is 9%)

To 0.09×1000= 90 or 9% of 1000 = 90

Hence, 90 students should be sleepyheads.

8 0
3 years ago
In 1992, the U.S. Environmental Protection Agency (EPA) introduced ____ as a voluntary labeling program designed to identify and
madam [21]

Answer:

<em>energy star.</em>

Explanation:

Its main objective is to help consumers, businesses, and industry save money and protect the environment through the adoption of energy-efficient products and practices.

3 0
2 years ago
Please help :)
Nataly [62]

V

Explanation:

1. F

2.T

3.T

4.F

5.F

6.T

7.T

3 0
2 years ago
PLEASE HELP
lana66690 [7]

Answer:

the answer is fda

Explanation:

hope this helps

5 0
2 years ago
Read 2 more answers
Spherocytosis is a human blood disorder associated with a defective cytoskeletal protein in the red blood cells (rbcs). what do
Alex17521 [72]
In spherocytosis, there is a defect in the membrane proteins of the red blood cells, specifically ankyrin and spectrin. These membrane proteins contribute to the biconcave shape of red blood cells therefore the loss of these proteins will lead the red blood cells to lose its biconcave shape--leading to abnormally shaped red blood cells (spheres) hence the name. This can lead to premature destruction of red blood cells and jaundice due to hyperbilirubinemia. Spherocytes do not hold oxygen and carbon dioxide well as spherocytes have a decreased surface area.
4 0
3 years ago
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