Answer:
D. is not very significant because it gives us little insight into human behavior.
Explanation:
Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.
As a scientific concept, race is not very significant because it gives us little insight into human behavior.
This ultimately implies that, race is a scientific concept that holds no significant or absolute value since the nineteenth century.
Hence, the difference between humans shouldn't be described based on race according to the United Nations Educational, Scientific and Cultural Organization (UNESCO).
Answer: Eutrophication
Explanation:
Eutrophication occurs when the amount of nutrients and minerals deposited in water bodies such as rivers, lake etc is at an increased rate such that the number of aquatic organisms multiplies leading to reduction in oxygen present in the water. Examples of human activities that cause eutrophication are
- uncontrolled use of fertilizer
- application of chemical such as pesticides, herbicides on farms, as they could be washed by rain into nearby lakes
Answer:
Algal bloom. Bright green blooms may also occur. These are a result of blue-green algae, which are bacteria (cyanobacteria). Some algal blooms are the result of an excess of nutrients (particularly phosphorus and nitrogen) into waters and higher concentrations of these nutrients in water cause increased growth of algae and green plants.
Explanation:
It’s water I don’t know but it’s only that
It’s the social standing or class of an individual or a group