A raised-bed garden is a type of gardening method in which the vegetables and other small plants are grown in garden boxes kept elevated above the ground. These garden boxes are kept separated from each other.
The advantages of having a raised-bed garden are:
1. The movement of harmful pest from crop to another is hindered.
2. It prevent the compaction of the soil.
3. It stops the propagation and growth of weeds from one box to another.
4. It provides better drainage of water from the soil.
5. The walls of the garden box prevent the erosion of the soil.
6. The garden boxes conserve space.
Hence the answer will be B. conserve water and space for growing and limit compaction of the soil.
The answer is grass receives 10% of the available energy
Your answer is
C.) Enhanced Natural Beauty
Answer:
1) Recursive definition: 
2) At the beginning of the 4th interval
Explanation:
1)
The initial population of the bacteria at time zero is

Here we are told that the reading is taken every two hours; we call this time interval "n", so

And also, after every time interval n, the number of bacteria has tripled.
This means that when n = 1,

And when n=2,

Applied recursively, we get

And substituting p0,
(1)
2)
Here we want to find at the beginning of which interval there are

bacteria.
This means that we can rewrite eq.(1) as

By simplifying,

Which means that

However, this means that the number of bacteria is 1,350,000 after 3 time intervals; therefore, at the beginning of the 4th interval.
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