Why is a minimum of three seismic stations needed to find the epicenter of an earthquake

Answers

Answer 1

Answer: Each point basically indicates a certain area in which the epicenter could be in, and only when three stations are given could it be narrowed down and the epicenter is found.

Answer 2

Answer:

Answer: Each seismic point shows the area of where the epicenter is, you can only reliably find the precise spot of the epicenter when you have 3 seismic points.

Explanation: wrote you a little paragraph, its correct! :)

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What is seafloor spreading?

Answers

Seafloor spreading is the formation of new areas of oceanic crust.

Its a process that happens at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then moves away from the ridge.

In 1783 Antoine Lavoisier showed that the heat produced by respiration was comparable to the heat produced when charcoal was burned. This expeiment shows the similarity between respiration andA) boiling
B) combustion
C) ignition
D) melting

Answers

The answer is B between respiration and combustion

Which is the term applied to the repeating stages that a cell experiences, including cell division? A. Mitosis B. Meiosis C. S phase D. Cell cycle

Answers

D. A cell cycle is a sort of "life cycle" for cells.

The answer is D. Cell cycle

I took the test, I hope this helps ya.........

>.<

Cytosine is which DNA based paired and bond to cytosine?

Answers

If you're asking for which DNA base pairs up with cytosine, then the answer is Guanine.

Why do humans need more potent pesticides over time?A) because the target population soon develops a resistance to the chemical
B) because pesticide salesman need to make more money
C) because plants begin to eat the pesticides
D) because the explosive growth of the human population places increased demands on current farmers

Answers

Answer:

Why do humans need more potent pesticides over time?

because the target population soon develops a resistance to the chemical

Explanation:

Over time when pest are exposed to pesticides to much, at a point in time they will develop resistance which calls for change of pesticides application.

Answer:

A. Because the target population soon develops a resistance to the chemical

Explanation:

I believe this is the correct answer here because it would be similar to how humans develop tolerance for medicine and illicit drugs; over time, we would need more and more of the drug to achieve the same result. It is also logical. B and C are definitely not correct nor are they logical, and D is not logical either; human population growth does not influence current farmers that much, and even if it did, humans would not need a higher quality of pesticide, just a higher quantity.

Are the offspring of parents who are both homozygous dominant for normal red blood cells in danger of getting sickle-cell anemia?

Answers

Answer:

If both parents do not have sickle-cell anemia, than the possibility is low.

Explanation:

If both parents have the sickle-cell trait, their offspring has a 25 percent chance of getting sickle cell anemia and a 50 percent risk of them having sickle cell trait. Meanwhile, there is also a 25 percent chance of the child not getting it at all.

If one parent has sickle cell anemia and the other has sickle cell trait, then their offspring with have a 50 percent chance of getting sickle cell anemia and a 50 percent chance of getting a sickle cell trait.

When both parents have sickle cell anemia, their child will definitely have it.

Answer:

No, 0% chance

Explanation:

none of the parents are carriers of this disease, and are homozygous dominant to the normal red blood cells, so they will not inherit this disease

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