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:
The correct answer is - startification.
Explanation:
Categorization of the people of the population in the socioeconomic class or uneven distribution of privileges and resources groups on the based of various factors or lines such as racial, gender, religion, family, legal status and others termed by the anthropologists as stratification. The socioeconomic strata is might be of four type, slavery, class, casts and estates depend of the population.
Thus, the correct answer is - startification.
C. Potassium
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A unicellular protist is a eukaryotic cell because it has a nucleus enclosed by a membrane. Protist cannont be grouped with plants, animals or fungi. However they are still eukaryotic.
The water molecules become close together and becomes a solid, the temperature is cold because the heat leaves the cup.