The answer is usefulness and profitability. An ore is a mineral or aggregate of minerals known as ore deposit and this can be mined or extracted like a metal. Hope this is the answer and would be of big help.
Answer:
Freshwater wetland biome
Explanation:
Wetlands are defined as those areas where the land area is mostly covered by water seasonally or annually. The areas remain wet. Freshwater wetlands are a type of biome that is not connected to the ocean. They are found mainly along the boundaries of rivers, streams, and lakes. The water in the freshwater wetland is generally evaporated during the summer season.
This biome is highly rich in nutrients that provide a favorable site for the existence of numerous plants and animal species. The leaves that are detached from the trees are deposited within the soils and also captures and accumulates the organic materials that are eliminated from the large trees within this region.
Answer:
Until recent history,extinctions have always happened gradually and on a small scale.
Explanation:
Extinction occur when environmental factors like natural disaster,habitat fragmentation,over exploitation,global change don't favor the survival of species thus gradually leads to extinction of species.
Some times human activity becomes the major problem for extinction.More over,poor reproduction,decline in population number and genetic inbreeding also leads to extinction.
99% of all species that exist on earth become disappeared.
Evolution leas to speciation which leas to formation of new species but species become extinct when they are unable to survive against competition.
