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2 years ago

How did the amount of rainfall help determine the formation of the prairie?

1 answer:

3 0

When a moderate rainfall area had wetter years, many trees began growing. when there were drier years, fires of ten occurred and killed off the small trees. However, the fires did not kill most grasses. Therefore, prairies with grassland won out in the open areas. Where the areas were most moist and protected, forests grew.

rainfall averaged between 25 cm per year and 100 cam per year in the prairie regions. the eastern parts of the prairie usually received more rainfall that the western parts of the prairie. the difference in rainfall is onereason why the food chain varied somewhat from east to west in the prairie ecosystem.

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4 0

2 years ago

Which of these is an agent of chemical weathering?.

Ivanshal [37]

<h2 /><h3>Which of these is an agent of chemical weathering?</h3>

<h3>Answer; The primary agents in chemical weathering are water, oxygen and acids. Explanation: These react with surface rocks to form new minerals that are stable in,or in equibrilium with the physical and chemical conditions present on the earth's surface</h3>

<h3>Hope it's helpful to you please rate me and like my answer.,...</h3>

3 0

2 years ago

An ellipse is represented by the equation . each directrix of this ellipse is a ________________________ from the center on the

Anastasy [175]

The true statement about the directrix is that each directrix of this ellipse is 31.25 units from the center on the major axis.

<h3>How to determine the distance of the directrix?</h3>

The equation of the ellipse is given as:

$\frac{(x - 5)^2}{625} -\frac{(y - 4)^2}{225} =1$

The above means that:

a^2 = 625

a = 25

b^2 = 225

b = 15

Calculate c using:

c^2 = a^2 - b^2

This gives

c^2 = 625 - 225

Evaluate the difference

c^2 = 400

Evaluate the square root

c = 20

The equation of the directrix is

x - x₀ = ± a²/c

So, we have:

x - x₀ = ± 625/20

Evaluate the quotient

x - x₀ = ± 31.25

This means that, each directrix is 31.25 units from the center on the major axis.

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7 0

2 years ago

How was the quran compiled

Flura [38]

Answer:

According to Islamic tradition, the Qur'an was first compiled into a book format by Ali ibn Abi Talib.

Explanation:

6 0

3 years ago

When 2. 0 m aqueous solutions of sodium bicarbonate and hydrochloric acid react, it produces carbon dioxide, water and sodium ch

OLEGan [10]

The number of mole of carbon dioxide, CO₂ formed from the reaction is 0.0632 mole.

<h3>How to determine the mole of NaHCO₃</h3>

Molarity of NaHCO₃ = 2 M
Volume = 31.6 mL = 31.6 / 1000 = 0.0316 M
Mole of NaHCO₃ =?

Mole = Molarity x Volume

Mole of NaHCO₃ = 2 × 0.0316

Mole of NaHCO₃ = 0.0632 mole

<h3>How to determine the mole of CO₂</h3>

NaHCO₃ + HCl —> CO₂ + H₂O + NaCl

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore,

0.0632 mole of NaHCO₃ will also react to produce 0.0632 mole of CO₂.

Thus, 0.0632 mole of CO₂ was obtained from the reaction

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8 0

2 years ago