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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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Assume that you purchased 140 shares of Misty Company stock for $78 a share, that you received an annual dividend of $1.60 a sha

sergeinik [125]

Answer:

Return (%) = 17.43%

Explanation:

The return on investment is the sum of the dividends earned and capital gains made during the holding period of the investment.

Dividend is the proportion of the profit made by a company which is paid to shareholders.

Capital gains is another type of the return made on an equity investment as a result of increase in the value of the shares. It is difference between the cost of the share and the value at the time of disposal.

Therefore, we can can compute the return on the investment as follows:

Dividend= ($1.60× 140)= $224

Capital gains= (90-78) × 140= $1680

Total dollar return on Investment = $224+ $1680= $1904

Total return in (%) = Return/ cost of shares × 100

= 1904/ (140 × 78) × 100

= 17.43%

7 0

3 years ago

The owner of a bicycle repair shop forecasts revenues of $188,000 a year. Variable costs will be $57,000, and rental costs for t

Umnica [9.8K]

Answer:

Revenues=$188,000

Less: Variable Costs=$57,000

Less: Rentals=$37,000

Earnings before depreciation and tax=$94,000

Less: Depreciation =$17,000

Earnings before tax=$77,000

Less: Tax40%=$30,800

Net Income=$46,200

a) Dollars in minus dollars out

Dollars in = Revenues = $188,000

Dollars out = Variable cost + Rentals + Tax = $57,000 + $37,000 + $30,800 = $124,800

Operating cash flow = $188,000 - $124,800 = $63,200

b) Adjusted accounting profits

Operating cash flow = Net income + Depreciation = $46,200 + $17,000 = $63,200

c) Add back depreciation tax shield

Operating cash flow = Earnings before depreciation and tax x (1 - tax rate) + Depreciation tax shield

or, Operating cash flow = $94,000 x (1 - 0.40) + $17,000 x 40% = $63,200

Yes, all the results are same.

7 0

3 years ago

The marketing staff wants to supply pens with attached USB drives to clients. In the past this client has been victimized by soc

Firdavs [7]

Answer: C. The security risks associated with combining USB drives and cell phones on a network

D. The risks associated with the large capacity of USB drives and their concealable nature

Explanation:

Based on the scenario that has been discussed in the question, the security administrator will instructs the marketing staff not to supply the USB pens based on the security risks that are associated with combining USB drives and cell phones on a network.

Another reason is due to the risks that are associated with the large capacity of USB drives and their concealable nature.

Since the client has been victimized by social engineering attacks that led to a loss of sensitive data in the past, they'll be extra careful this time around.

4 0

3 years ago

A laborer wears a special back brace when loading trucks, a freight inspector wears goggles when conducting tests, and a distrib

Alborosie

A laborer wears a special back brace when loading trucks, a freight inspector wears goggles when conducting tests, and a distribution manager wears earplugs while overseeing shipments. In which workplace do these Transportation and Logistics employees most likely work? Warehouses. Based on that equipment needed while working it seems as if warehouses is the most logical place they are working.

Yukio is a Brownfield Redevelopment Specialist. Which best describes his job? Organizes the cleaning and redevelopment of areas contaminated by pollution or waste. When you redevelop land, you are removing things that make the land not usable to be able to reuse the land again. By doing this, you can make sure the land is able to be reused before spending more time trying to develop the land again or purchasing new land.

5 0

3 years ago

A city that is attempting to attract a professional football team is planning to build a new stadium costing $500 million. Annua

garik1379 [7]

Answer:

Capitalized cost = - $510,758,686.20

Explanation:

Interest rate = r = 10%, or 0.10

Present value of base cost = $500 million = $500,000,000

Present value of annual upkeep = $1,000,000 / r = $1,000,000 / 0.10 = $10,000,000

Present value of the replacement cost of artificial turf every 20 years = ($2,000,000 * (r / (((1 + r)^20) - 1)) / r = ($2,000,000 * (0.10 / (((1 + 0.10)^20) - 1)) / 0.10 = $349,192.50

Present value of painting every 5 years = ($250,000 * (r / (((1 + r)^5) - 1)) / r = ($250,000 * (0.10 / (((1 + 0.10)^5) - 1)) / 0.10 = $409,493.70

Therefore, we have:

Capitalized cost = - Present value of base cost - Present value of annual upkeep - Present value of the replacement cost of artificial turf every 20 years - Present value of painting every 5 years = - $500,000,000 - $10,000,000 - $349,192.50 - $409,493.70 = - $510,758,686.20

6 0

2 years ago