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3 years ago

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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What is the purpose of a design brief?

Sedbober [7]

A project management document that allows you to identify the scope, scale, and core details of your upcoming design project.

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3 years ago

4. In the late 1990s and through 2000, the British public became increasingly concerned about " Mad Cow Disease," which could be

LuckyWell [14K]

Answer:

The quantity is likely to decrease, the change in price depends on the extent of change in demand and supply.

Explanation:

The fear of the mad cow disease lead to a reduction in the demand for beef. This caused the demand curve to move to the left.

At the same time, destruction of cattle heads ordered by the government lead to a reduction in the supply of beef. This caused the supply curve to move to the left.

This leftward shift in both demand as well as supply curve will lead to a reduction in the equilibrium quantity of beef.

The change in price of beef depends upon the extent of change in demand and supply. If both decrease by the same extent, the price will remain the same.

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3 years ago

The stockholders’ equity section of Fauberg Marigny Corporation at December 31 is as follows.

KengaRu [80]

Answer:

1. 295,000 shares

2. $10 per share

3. $60 per value

4. 6%

5. $2,046,400

Explanation:

1. Calculation for How many shares of common stock are outstanding

Outstanding common stock 300,000 shares

Less Common shares 5,000

Common shares outstanding 295,000 shares

2. Calculation for the stated value of the common stock

Stated value of the common stock

$1,500,000/150,000

Stated value of the common stock = $10 per share

3. Calculation for What is the par value of the preferred stock

Par value of the preferred stock=$300,000/5,000

Par value of the preferred stock=$60 par value

4. Calculation for dividend rate on preferred stock

Dividend rate on preferred stock=$18,000/$300,000 = 6%

5. Calculation for what would be the balance in Retained Earnings

Balance in Retained Earnings= $2,050,000 -$36,000

Balance in Retained Earnings=$2,046,400

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3 years ago

On January 1, 2021, the Excel Delivery Company purchased a delivery van for $46,000. At the end of its five-year service life, i

marusya05 [52]

Answer:

Given

Cost $46000

Life= 5 years

Salvage Value= $ 4000

Total miles = 165,000

Formula

Depreciation Straight Line Method= Cost - Salvage Value/ Useful Life

Straight Line Rate= 100%/ useful Life= 100%/5 = 20%

Double Declining Method = 2 * Straight Line Rate

Double Declining Method = 2 * Straight Line Rate= 2*20%= 40%

1. Depreciation Straight Line Method= Cost - Salvage Value/ Useful Life

Depreciation Straight Line Method= $ 46000- $4000/ 5= $ 8,400

The depreciation expense using the straight line method does not change unless the salvage value is reached

Years Depreciation Accumulated Dep Book Value

(Cost - Accu. Dep)

a. 2021 $ 8,4000 8400 37600

b. 2022 $ 8,4000 16,800 29,200

c. 2023 $ 8,4000 25200 20,800

d. 2024 $ 8,4000 33,600 12,400

e. 2025 $ 8,4000 42000 4000

2. Straight Line Rate= 100%/ useful Life= 100%/5 = 20%

Double Declining Method = 2 * Straight Line Rate

Double Declining Method = 2 * Straight Line Rate= 2*20%= 40%

In double declining method the rate is multiplied to the cost to get the depreciation expense. 40 % of $ 46000= $ 18400

Each year the rate is multiplied with the remaining book value after deducting the depreciation expense from the cost as $ 46000- $ 18400= $ 27600

Next years depreciation will be $ 27600 * 40%= $ 11040.

This will be added in the original depreciation expense $ 18400 + $ 11040 = $ 29440 and deducted from cost to get the book value. $ 46,000- $ 29440 = $ 16560.

Again rate will be multiplied and each years depreciation will be calculated similarly.

It has been summarized in the table below.

Years Dep Rate Dep Expense Accu. Dep. Book Value

a. 2021 40% 18400 18400 27600

b. 2022 40% 11040 29440 16560

c. 2023 40% 6624 36064 9936

d. 2024 40% 3974.4 40,038.4 5961.6

e. 2025 40% 2384.64 42,0423.4 3576.96

3. Depreciation per unit= (Cost -Salvage value) / Total units of production* Units of Production

Years Mileage Depreciation Depreciation

a. 2021 35,000 ($ 42000/165000)*35000 8909.09

b. 2022 37,000 ($ 42000/165000)*37000 9418.18

c. 2023 28,000 ($ 42000/165000)*28000 7127.27

d. 2024 33,000 ($ 42000/165000)*33000 8400

e. 2025 34,000 ($ 42000/165000)*34000 8654.54

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4 years ago

A letter to your headmaster telling him the reasons you want to change your course

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4 years ago