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ad-work [718]
3 years ago
5

How is the speed of a rivers flow determined??????

Biology
1 answer:
faltersainse [42]3 years ago
6 0

The speed of a river varies from close to 0 m/s to 3.1 m/s (7 mph). Factors that affect the speed of a river include the slope gradient, the roughness of the channel, and tides. Rivers tend to flow from a higher elevation to a lower elevation. ... Just as speed affects erosion, erosion affects speed.

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Describe one niche in the ecosystem.
DIA [1.3K]

Answer:

Niche can be described as the role or position that a particular organism has in its ecosystem.

For example, honeybees which will gather nectar from flowers to make honey is an example of a niche. The particular role of honeybees in an ecosystem is to collect nectar in that ecosystem from different flowers and to produce honey. Other organisms living in the same environment will not perform the same function in the ecosystem.

3 0
3 years ago
which of the following statement is true about the nutrient cycle? A. plants fix nitrate into atmospheric nitrogen. B. all the n
bija089 [108]

Answer: B. all the nitrogen obtained by animals come from plants.

Explanation:

Animals are unable to use inorganic bacteria until plants absorb it and then animals get it from the plants so in effect, all the nitrogen obtained by animals comes from plants.

Plants absorb nitrogen in the form of Nitrates which were fixed by bacteria from Nitrites which were further fixed from Ammonium which was fixed from atmospheric Nitrogen all by bacteria.

7 0
2 years ago
HELP PLEASE
ladessa [460]

Answer:

1. Across the world, mining contributes to erosion, sinkholes, deforestation, loss of biodiversity, significant use of water resources, dammed rivers and ponded waters, wastewater disposal issues, acid mine drainage and contamination of soil, ground and surface water, all of which can lead to health issues in local.. 2.Mining in the real world can affect society, ecosystems, and the environment of a specific  region because all the minerals that you are looking for won't be right where you want them to be. It is not going to be in the same area. Instead, it will be scattered throughout the mines and you will have to search for them. 3.Students act as mining engineers and simulate ore mining production by using chocolate chip cookies. They focus on the cost-benefit analysis of the chocolate ore production throughout the simulation, which helps them understand the cost of production. As students “mine” with tools such as paperclips and toothpicks, they keep records of their costs—land (cookie), equipment used, cookie size before and after production, and time spent. While the goal is to make as much profit as possible, other costs and goals are taken into consideration—as in real-world mining engineering. For example, mining engineers also consider the resulting amount of destruction to the lithosphere when deciding the best method to obtain ore. Thus, a line item for land reclamation cost is included from the beginning. A provided worksheet serves as a profit and loss statement. 4.Mine reclamation is the process of restoring land that has been mined to a natural or economically usable state. Although the process of mine reclamation occurs once mining is completed, the planning of mine reclamation activities occurs prior to a mine being permitted or started.

Explanation:

i don't have a explanation but i hope this helps

3 0
3 years ago
Can anyone pls help I’m stuck.
Korolek [52]

Answer:

B

Explanation:

a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one,

4 0
3 years ago
The stage where the cell spends most of its time is
Leviafan [203]
Is interphase....... Hope its right
7 0
3 years ago
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