All categories

3 years ago

As a river transitions to less steep land, it gets wider and slower and

Biology

1 answer:

kakasveta [241]3 years ago

7 0

In rivers, a transition occurs from the highest course to the medium and lowest course. When a river transitions to less steep land, it gets wider and slower and contains more oxygen, nutrients, and fewer algae blooms.

--------------------------------------------

A river is composed of three main courses:

The highest course is near the source.
The medium course, where there is a low slope. There is a decrease in the speed of the waters, the erosive effect, and the dragging capacity. The flow increases due to the contribution of tributaries. The valley widens.
The low course is near the mouth, where the slope is low, and the river speed decreases notoriously. There are wider valleys -plains- and wide meanders. The most characteristic feature of this part of the river is the deposit of the last materials that have been uprooted and transported in the previous phases. Hight sedimentation degree.

When a river transitions to less steep land, getting wider and slower, it contains more oxygen, more nutrients, and fewer algae blooms.

This occurs because sunlight reaches the bottom in those areas with less steepness. As the current is not that strong, many vegetable species can grow and photosynthesize, attaching to the bottom and not being pulled up by the stream.

The existence of more vegetable species -especially near the shore- means a higher photosynthetic rate, which also means more oxygen available. As we already know, during the photosynthesis process, oxygen is released from water molecules. So, the more photosynthetic species grow in these rivers, the more oxygen is available.

More plants growing in shadower areas also means more refuge available for invertebrates and small vertebrates. Many animal species can find shelter and a source of food in fewer steep lands, especially small species.

As biodiversity increases, it also increases organic matter and nutrients available for plants and animals. Sediments might accumulate in the bottom.

--------------------------

You might be interested in

Can someone match them? ALL FOR BRAIN LIEST TY!! :D

Verdich [7]

Answer:

1: D

2: C

3: G

4: A

5: E

6: I

7: F

8: H

9: B

4 0

3 years ago

Why is this considered a nonscientific question? "What color is a great horned owl?"

madam [21]

Answer:

The question "What color is a great horned owl?" does not require the scientific method to be used for getting an answer hence, it is not a scientific question. This question does not require any hypothesis or any other method. It can easily be answered by just looking at the horned owl.

A scientific question has to be a question from which a hypothesis can be made. The hypothesis can be tested through experiments and observations. Results and conclusions from the experiments would result in answering that question.

4 0

3 years ago

Which two Macromolecules are involved in energy

Sphinxa [80]

While carbohydrates supply immediate energy for the body, lipids — a class of macromolecule — provide long-term energy storage. Lipids, more commonly known as fats, appear in many foods.

6 0

3 years ago

In the equation shown, what are the reactants? 2H2-02 --> H2O

Slav-nsk [51]

It would be hydrogen and oxygen molecules. H: hydrogen O: oxygen, the H2O is the product.

7 0

3 years ago

What producers serve as the basis of the food chain in this layer of the ocean answers?

Norma-Jean [14]

In the first segment that covers the top part of the ocean the whale sharks producers serve as the basis of the food chain. In the top layer of the ocean enough sunlight hits the water which makes it a good place for planktons to grow. These planktons are then eaten by the whale sharks.

7 0

3 years ago