If a population grows larger than the carrying capacity of the environment, which of these is most likely to happen?A. The death rate may rise.
B. The birthrate may rise.
C. The death rate must fall.
D. The birthrate must fall.

Answers

Answer 1

Answer: The answer is A. The death rate may rise. Carrying capacity is the total number of organisms that an environment can support. So, if a population grows larger than the carrying capacity of the environment, there will be more organisms than the environment can support. The environment cannot sustain this number, so organisms will die until the population is under the carrying capacity. So, the death rate may rise to reduce the population size.

Answer 2

Answer:

If a population grows larger than the carrying capacity of the environment, the most likely to happen is:

A. The death rate may rise.

When a population grows larger than the carrying capacity of the environment, the resources available to the population will be depleted. This can lead to a decrease in the availability of food, water, and shelter. As a result, the death rate may rise.

The birthratemay also rise, but this is less likely. If the resources are already depleted, there may not be enough food and water to support a larger population. In addition, the stress of living in a crowded and resource-depleted environment may lead to an increase in stress-related deaths.

The other options, B. The birthrate may rise, C. The death rate must fall, and D. The birthrate must fall, are incorrect. The birthrate may rise, but it is not guaranteed. The death rate may fall, but it is not necessary. The most likely outcome is that the death rate will rise.

This is a concept known as carrying capacity, which is the maximum population size that an environment can sustain indefinitely. When a population exceeds the carrying capacity, the population will eventually crash. This can happen through a number of mechanisms, including starvation, disease, and conflict.

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Structurally, what is the difference between the dermis and the epidermis?A. the dermis contains more types of tissue.
B. the epidermis consists of mostly adipose cells.
C. the epidermis is thicker.
D. the dermis is made of mostly dead cells

Answers

A is the right answer

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Which list includes elements with the most similar chemical properties? 1.Br, Ga, Hg 2. Cr, Pb, Xe 3. O, S, Se 4. N, O, F

Answers

The list which includes elements with the most similar chemical properties is; Choice 3: O, S, Se

First, we must know:

Elements are arranged in 7 Periods and 18 groups in the periodic table.

Additionally, Elements in the same group of the periodic table often have similar chemical characteristics as a result of equal number of Valence electrons.

By considering Choices individually;

For Choice 1: (Br, Ga and Hg)

Bromine is a member of Group 17, Gallium is a member of Group 13 and Mercury is a member of Group 12.

Bromine is a member of Group 17, Gallium is a member of Group 13 and Mercury is a member of Group 12.All three elements belong to different groups. In essence, they do not show similar chemical properties.

For Choice 2: (Cr, Pb and Xe)

The elements belong to different groups of the periodic table and consequently, they do not show similar chemical properties.

For Choice 3: (O, S and Se)

Oxygen, Sulfur and Selenium are all members of Group 16(6)

Since, all three elements belong to same group. In essence, they will show similar chemical properties.

For choice 4: (N, O and F)

The elements belong to different groups of the periodic table and consequently, they do not show similar chemical properties.

Ultimately, the correct answer is Choice 3.

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Answer: The correct answer is Option 3.

Explanation:

Elements are distributed in 7 Periods and 18 groups in a periodic table.

Elements which belong to same group show similar chemical properties because of the same number of valence electrons.

For the given options:

Option 1: Br, Ga and Hg

Bromine is present in Group 17, Gallium is present in 13 and Mercury is present in Group 12.

As, all the three elements belong to different groups. So, they do not show similar chemical properties.

Option 2: Cr, Pb and Xe

Chromium is present in Group 6, Lead is present in Group 14 and Xenon is present in Group 18.

As, all the three elements belong to different groups. So, they do not show similar chemical properties.

Option 3: O, S and Se

Oxygen, Sulfur and Selenium are present in Group 16.

As, all the three elements belong to same group. So, they will show similar chemical properties.

Option 4: N, O and F

Nitrogen is present in Group 15, Oxygen is present in Group 16 and Fluorine is preset in Group 17.

As, all the three elements belong to different groups. So, they do not show similar chemical properties.

Hence, the correct answer is Option 3.

Which statement describes the particles of an ideal gas based on the kinetic molecular theory?(1) The gas particles are relatively far apart and have negligible volume.
(2) The gas particles are in constant, nonlinear motion.
(3) The gas particles have attractive forces between them.
(4) The gas particles have collisions without transferring energy.

Answers

The particles are in a constant nonlinear motion.

A. They are far apart and have negligible volume. This makes it easier to calculate certain quantities such as temperature, pressure, and volume. If the gas particle volume is added, then the complex van der Waals equation has to be used to calculate these same quantities. We also assume that they are far apart because this implies that they will not collide.

What is the limiting reactant if 4.0 g of Nh3 react with 8.0 g of oxygen?

Answers

Answer : The limiting reagent is $O_2$ .

Solution : Given,

Mass of $NH_3$ = 4.0 g

Mass of $O_2$ = 8.0 g

Molar mass of $NH_3$ = 17 g/mole

Molar mass of $O_2$ = 32 g/mole

First we have to calculate the moles of $NH_3$ and $O_2$ .

$\text{ Moles of }NH_3=\frac{\text{ Mass of }NH_3}{\text{ Molar mass of }NH_3}=(4.0g)/(17g/mole)=0.24moles$

$\text{ Moles of }O_2=\frac{\text{ Mass of }O_2}{\text{ Molar mass of }O_2}=(8.0g)/(32g/mole)=0.25moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$4NH_3+5O_2\rightarrow 4NO+6H_2O$

From the balanced reaction we conclude that

As, 5 mole of $O_2$ react with 4 mole of $NH_3$

So, 0.25 moles of $O_2$ react with $(0.25)/(5)* 4=0.20$ moles of $NH_3$

From this we conclude that, $NH_3$ is an excess reagent because the given moles are greater than the required moles and $O_2$ is a limiting reagent and it limits the formation of product.

Hence, the limiting reagent is $O_2$ .

NH3-The limiting reactant is the reactant that get completely used up in a reaction

What is combustion and how does it affect the carbon cycle?

Answers

combustion is burning and that usually produces carbon in the reaction adding it to the atmosphere

What is the percent by mass of magnesium sulfate in MgSO4 · 7H2O?

Answers

ANSWER - 48.83%

Mg - 24.31
S - 32.07
O - 16x4 - 64
ADD ALL TOGETHER = 120.38

H - 1.01x2 - 2.02
O - 16
TOTAL = 18.02x7 = 126.14

ADD 120.38 to 126.14 = 246.52
last part divide MgSO4 by total compound mass
120.38/246.52 then multiply by 100 = 48.831

Answer:

48.83

Explanation:

Edg

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