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Alenkasestr [34]
3 years ago
9

In 1906, there was a small population of deer on the Kaibab Plateau. Because cows had overgrazed the food on the Kaibab Plateau,

the Forest Service decided to create a preserve on the Kaibab Plateau for the deer. In the preserve, the cows and the natural predators of the deer were removed. In 1920, the Forest Service discovered that the number of deer in the preserve was very large. By 1923, most of the deer were starving from a lack of food. Which statement best describes what happened on the Kaibab Plateau between 1906 and 1923? Overgrazing by cows caused the deer on the Kaibab Plateau to starve. The large growth and starvation of the deer population was an event of natural selection. With no natural predators to regulate the population, the deer population continued to grow. The growth of the deer population was slower than the growth of the food supply on the Plateau, causing starvation.
Chemistry
1 answer:
RideAnS [48]3 years ago
5 0

Answer: With no natural predators to regulate the population, the deer population continued to grow.

Explanation:

In 1906 a preserve was created for the deer. In creating this they drove both the cows as well as the deer's natural predators away. This meant that the deer population was no longer regulated by the predators hunting and eating them which led to an explosion in deer population.

The land which had been overgrazed at some point could not support this population and so the deer started starving because there simple wasn't enough food to support their population.

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A 0.271g sample of an unknown vapor occupies 294ml at 140C and 874mmHg. The emperical formula of the compound is CH2. How many m
Phoenix [80]
Using PV = nRT, we can calculate the moles of the sample.
874 mmHg = 116,524 Pa
n = PV/RT
n = 116,524 x 294 x 10⁻⁶ / 8.314 x (140 + 273)
n = 9.98 x 10⁻³ mol

moles = mass / Mr
Mr = 0.271/9.98 x 10⁻³
Mr = 27.2
Mass of empirical formula = 14
Repeat units = 27.2 / 14 ≈ 2

Formula of substance:
C₂H₄

Combustion equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O

1 mole produces 2 moles of CO₂, so 3 moles will produce 6 moles CO₂
7 0
3 years ago
Helppp ASAP Don’t GUESSSSS
Sever21 [200]

I'm gonna go ahead and guess, and say its B.

8 0
3 years ago
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One success of Johann Döbereiner's law of triads was that it organized most of the known elements into three-element groups base
jenyasd209 [6]
That statement is true

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Teniendo en cuenta los siguientes fenómenos: ebullición del agua- movimiento de un cuerpo- disolución de sal en agua- combustión
miv72 [106K]

Answer:

Las siguientes son reacciones químicas;

combustión de leña

oxidación del hierro

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Explanation:

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Las siguientes son reacciones químicas;

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descomposición del agua en hidrógeno y oxígeno: esta es una reacción química en la que el agua se descompone de la siguiente manera; 2H2O (l) -----> 2H2 (g) + O2 (g)

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