Correct Answer: B. Is the electricity in your neighbour's premises supplied by a generator

Correct Answer: D) succession begins only on a bare ground

Explanation

Succession refers to the changes that occur in the species composition, community structure, and function of an ecosystem over time and space. This process is usually set in motion by some sort of disturbance, such as a volcanic eruption, wildfire, or human activity. As a result of this disturbance, organisms that are better suited to the new conditions move in and establish themselves, replacing the previous inhabitants. This process is both directional and predictable, with each stage of succession leading to the next and culminating in a stable, climax community. Option A is a true statement about succession. Option B is also correct in that disturbance is usually necessary to initiate succession. Option C is also true, as succession follows a predictable pattern. Option D, on the other hand, is incorrect. Succession can begin on any type of ground, not just bare ground. For example, secondary succession occurs in areas where the soil has already been formed, but the previous community has been removed, such as after a forest fire. Therefore, Option D is the correct answer to this question. It is important to note that succession is a natural process that occurs over a long period of time and is influenced by many factors, including climate, topography, and biotic interactions. Understanding the process of succession is important for understanding how ecosystems change and adapt over time.

Correct Answer: C. working capital

Correct Answer: B. commissioned

Correct Answer: C. syphilis

Correct Answer: D. 32.34cm²

Explanation

\(\frac{θ}{360}\) *π * r\(^2\) → \(\frac{210 * 22 * 4.2 * 4.2}{360 * 7}\)

\(\frac{1617}{50}\) = 32.34cm\(^2\)

Correct Answer: C. made a sport of him at Bethshan

Correct Answer: D. 0.75

Explanation

Here's how to solve the problem using Snell's Law:

Snell's Law can be expressed in terms of the velocities of light in the two media:

sin(θ1) / sin(θ2) = v1 / v2

Where:

• θ1 = angle of incidence

• θ2 = angle of refraction

• v1 = velocity of light in the first medium (air)

• v2 = velocity of light in the second medium (glass)

Given values:

• v1 = 3.0 x 10⁸ ms^-1 (velocity in air)

• v2 = 2.0 x 10⁸ ms^-1 (velocity in glass)

• θ2 = 30° (angle of refraction)

We need to find sin(θ1).

First, calculate sin(θ2):

sin(30°) = 0.5

Now, substitute the values into Snell's Law:

sin(θ1) / 0.5 = (3.0 x 10⁸ ms^-1) / (2.0 x 10⁸ ms^-1)

Simplify the ratio of velocities:

(3.0 x 10⁸) / (2.0 x 10⁸) = 3.0 / 2.0 = 1.5

So the equation becomes:

sin(θ1) / 0.5 = 1.5

Now, solve for sin(θ1):

sin(θ1) = 1.5 * 0.5

sin(θ1) = 0.75

Comparing this to the given options, D is the correct answer.

The final answer is 0.75

Correct Answer: D. Benjamin thinks that Napoleon always says the right thing

Correct Answer: D. III and IV

Explanation

The foetus obtains dissolved oxygen and nutrients from the dam through the parts labelled III and IV