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Dvinal [7]
3 years ago
8

Keystone predators can maintain species diversity in a community if they

Business
1 answer:
Vikki [24]3 years ago
4 0

Answer:

The options are given below:

A) competitively exclude other predators.

B) prey on the community's dominant species.

C) allow immigration of other predators.

D) reduce the number of disruptions in the community.

E) prey only on the least abundant species in the community.

the correct option is B

Explanation:

Keystone species refers to a predator which prevents a particular herbivorous species from wiping out the dominant plant species. If the number of prey are low, the keystone predators can be less abundant and still be effective. Keystone species have a disproportionately large effect on its environment relative to its abundance.

Therefore, by preying on a community's dominant species, keystone predators help to maintain the species diversity in the community, because they ensure that the dominant predators do not totally wipe out the various organisms present in the ecosystem.

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Pizza is a normal good. if students' incomes at your college increase, the effect on pizza will be:________
erica [24]

Answer:

Normal goods have a positive relationship with income & purchasing power parity (PPP) with an increase in income ( I )  consumption of normal goods also increased respectively.

So, with the increase in students' income consumption of Pizza will be increased

As normal goods have a positive income elasticity of demand coefficient but it will be less than one.

Explanation:

Let’s discuss the normal goods, as a decrease in the price of normal goods its consumption will boost or increase. As when normal goods become cheaper, they will be consumed much as we know that people will consume them because of the logical reasoning of cheaper than its substitutes. Likewise, with an increase in income, its consumption will also increase but at a stage where it will become inelastic or constant.

You can learn more about Economics

at brainly.com/question/28179544

#SPJ4

4 0
1 year ago
An individual is now 50 years old, that he plans to retire in 10 years, and that he expects to live for 25 years after he retire
Nutka1998 [239]

Answer:

Ans.  He must save during each of the following 10 years, at the end of each year $32,452.

Explanation:

Hi, in order to find the amount of money that he should have in ten years so he can receive an annual payment of $65,156 for 25 more years (24 payments), we need to bring to present value all 24 payments to year 10. Let me show you the formula.

PresentValue_{10} =\frac{A((1+r)^{n}-1) }{r(1+r)^{n} }

Where:

A= $65,156

n= 24

r= 0.08

Therefore the present value in year 10 is:

PresentValue_{10} =\frac{65,156((1+0.08)^{24}-1) }{0.08(1+0.08)^{24} }=686,012

So that is our present value in year 10, or to put it in other words, our future value (if we look at it from year 0). Now we need to find the annuity (amount to save) that with account for $686,012, plus that $100,000 that he already has saved.

Every should look like this.

686,012=100,000*(1+0.08)^{10} +\frac{A((1+0.08)^{10}-1) }{0.08(1+0.08)^{10} }

And we solve this equation for "A".

686,012=A(14.4865625)+215,892

A=\frac{(686,012-215,892)}{14.4865625} =32,452

Best of luck.

5 0
3 years ago
Durai joined in organization for a fortnight and he had conversation with
Elenna [48]

Answer: n

Explanation:

n n

4 0
3 years ago
Bonita Manufacturing uses a flexible budget. It has the following budgeted manufacturing costs for 24700 pairs of shoes: Fixed M
NikAS [45]

Answer:

the  total budgeted manufacturing cost is $292,600

Explanation:

The computation of the total budgeted manufacturing cost is shown below;

Total Budgeted Costs = Fixed Costs + Variable costs

= $12,300 + $292,600

= $304,900

Total Variable costs = Variable Cost Per Unit × Activity Level

= $14 × 20,900

= $292,600

Hence, the  total budgeted manufacturing cost is $292,600

4 0
2 years ago
Erie company has 500 units of capacity for their traditional product, Emu, and buys one point of automation. If Erie company’s c
11111nata11111 [884]

Answer: 2 years

Explanation:

The payback period is the amount of time that is needed for the required cash inflow of a project to offset the initial cash outflow that the business offsets. The payback period is when the initial outlay of an investment is recovered. There are two different methods used to calculate payback period. We have the average method and the subtraction method.

In the above question, the payback period is solved as follows:

Labour cost decreases by 10% for each unit.

Therefore,

= $10 × 10%

= $10 × 0.1

= $1 per unit.

In order to recover $2000, the business needs to sell the following;

= 2000/1

= 2000units.

If Eric sells 1000 units per year of Emu, it will take:

2000/1000= 2years

In conclusion, the payback period of the investment is 2 years.

8 0
3 years ago
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