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greater area for seedlings to make them stronger and This is done by removing the crowded seedling in the seed box. 3. is to be considered in determining the exact time of harvesting.​

Sagot :

Answer:

While all waves adhere to the principle of “transport of energy without moving matter”, wave forms consitiute a vast family of forms within which one can ideintify types with varied physical properties.

Specifically, there are two broad classes of waves: mechanical waves which must pass through physical matter in order to propagate, and electromagnetic waves which need not to do so.

Mechanical and acoustic waves

Simply tapping a finger on the corner of a table creates mechanical waves that spread in the air (the sound of tapping) and in the table (as vibrations. Water waves are another example – from the ripples on a pond up to a tidal wave. Seismic waves belong to this category: they are created by deep geological shocks and propagate through the Earth’s crust.

At the other end of the scale, plucking on a stretched rubber band makes it vibrate, generating mechanical waves that move through the rubber.

Sound is even more universal: it is a wave generated by the mechanical vibration of a material and moves through air or water. These so-called acoustic waves are particularly easy to use and adjust or ‘modulate’: if speak in one direction or another, shout or whisper – each such change will alter the wave length, amplitude and frequency of the sound.

Electromagnetic fields

Electromagnetic waves (also known as Electromagnetic fields or EMF) form an equally varied category, which can be classified by frequency bands: this is known as the electromagnetic “spectrum”. It extends from the lowest frequencies (those of power lines, for example) to the highest frequencies (UV, X-rays, gamma rays). In between are radio waves (or radio frequencies), found naturally and used in communications and of course, light. Everything our eyes see is transmitted by EMFs the frequency – or colour – of which corresponds to the “visible” band of the spectrum. What then distinguishes EMFs from acoustic waves? They, EMFs, do not require any medium to move at very high speeds over vast distances (like starlight), or to travel through empty space or pass through specific materials.

Answer:

Fruit bearing trees

Explanation:

1. The 4 elements to be observed in planting trees and fruit-bearing trees to

gain more products are

is the process that accelerates the circulation of air and

provide greater area for seedlings to make them stronger and healthier?

This is done by removing the crowded seedling in the seed box

is to be considered in determining the exact time of harvesting

4. The correct time of harvest depends on the

to market and

the place

5

with growing health awareness and changing lifestyles.

is an area to consider in planting fruit-bearing trees in line

is a method of

6. There are two methods in planting trees.

planting seeds directly into the ground or plot.

planting seeds in a seed box or plastic container,

fully grown seedlings are

transplanted to the ground or plot.

7. Give two situations that affect the market demand of fruits in the

marketplace

8. In what way are you encouraged by the stories of orchard growers in the

country and nearby communities?​

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