Correct answer: B). Shelter wood cutting takes place over several years
Shelterwood cutting is the progressively cutting of the forest, in order to establish the growth of the new generation of the seedlings of a particular species without planting.
It is a method of natural tree reproduction under the shelter of old trees, which are removed successively by cutting the tree in order to provide the increased amount of light to the new seedlings. It is a slow process and takes lot of time.
<span> Quando as pessoas descrevem como os gostos dos alimentos, eles estão realmente falando sobre o sabor do alimento, e não apenas os gostos básicos de doce, azedo, salgado e amargo. A gama de experiências de sabor também inclui aroma, textura e boca '' sentir '' - e, alguns diriam, até mesmo a agradável dos alimentos.</span>
Answer:
the pH
Explanation:
The condition that should not be kept the same in each of the five test tubes is the pH.
Since <u>the aim of the experiment is to investigate the effect of pH on the activity of the lipase enzyme</u>, the pH is, therefore, the <em>independent variable</em>. Thus, it must be controlled or varied in all the test tubes in order to see its effect on the activity of the enzyme, which, in this case, would be the dependent variable.
