The roots of the trees keeps the soil in place
Answer:
Lichens are not parasitic when they grow on trees, they just use the tree bark as a home. They enrich the soil by trapping water, dust and silt. When lichens die they contribute organic matter to the soil, improving the soil so that other plants can grow there.
Answer:
Explanation:
1) Excitation brings about contraction.
2) Contraction leads to an increase in blood pressure.
3) Changes in blood pressure results in the opening and closing of the heart valves.
4) The opening and closing of heart valves then regulates the flow of blood and it's volume.
Answer:
RNA is a single-stranded nucleic acid. RNA has a ribose sugar instead of a deoxyribose sugar like DNA. RNA nucleotides have a uracil base instead of thymine. There are many different types of DNA RNA is single stranded RNA forms a double helix.
Explanation:
<h2>The Summer Drought Influence</h2>
The summer drought will influence the model badly because the water is used to make food. Water is the basic need of our life. It is used in everything in our lives like electricity production, washing dishes, and many other activities in daily life. We don’t have enough water means drought and this effect disturbs many people in many activities within various nations.
