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VikaD [51]
3 years ago
11

Where does the water in rivers come from? What causes rivers to flow?

Biology
2 answers:
TEA [102]3 years ago
8 0
A stream, or a river<span>, is formed whenever water moves downhill from one place to another. It keeps collecting water from rain or by running into other water sources and that's how i keeps flowing.</span>
WITCHER [35]3 years ago
8 0
Hey there,

Water in rivets come from runoffs or when water moves downhill. Rivers flow from downhill from rain or other water sources.

Hope I helped :)
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Several fish species became extinct millions of years ago. The graphs provided below show the distribution of fossils of these f
cestrela7 [59]
1. Explain why the distribution of fossils in Figure 1 supports the hypothesis that the extinction of these species was the result of a sudden environmental change.
This hypothesis can be supported because all the fossils accumulate almost at the same age of the rock layer. That is, all the fossils died almost at the same time.

2. Describe an environmental change that could have produced this type of fossil distribution.
Good examples of sudden environmental changes are volcanoes. When a rash occurs, the whole environment suddenly changes for different reasons such as ash or lava, and all living things can die immediately or in a few years by the change in the ecosystem.

3. Explain why the distribution of fossils in Figure 2 supports the hypothesis that the extinction of these species was the result of a gradual environmental change.
This is because the fossils accumulate at different ages of the rock layer, that means, the species dying over time. The gradual descent of the fossils is observed.

4. Describe an environmental change that could produce this type of fossil distribution.
For example, if a climate change occurs - the temperature increases or decreases - it can cause the trees or plants to die and all the animals in the ecosystem also die when they have no food. But this process is sequential, so the change can take years, centuries or even millions of years.

I hope this can help you.
4 0
3 years ago
Which of the following enzymes does not carry out a posttranslational modification?
Mashutka [201]

Answer:

a. Aminopeptidase and e. Angiotensin converting enzyme (ACE)

Explanation:

Posttranslational modification includes the transfer or removal of functional groups.

8 0
3 years ago
Which of the following is an example of a species changing over time.
pickupchik [31]
The examples of species changing over time are statements A, C, and D.

All these changes, such as new types of squash was developed in the garden. weeds evolution to resist chemicals, and the changes in butterflies wing pattern over the years is because of Mutation. Obviously, rabbit's ears are always bigger than mice and Giraffe's neck is always longer than the deer's. In genetics, mutation is the process of permanent alternation of the nucleotide sequence in DNAs.
3 0
3 years ago
Plz help<br>New evidence can lead to a change in scientific knowledge.<br><br> True<br><br> False
MatroZZZ [7]

Answer:

Your answer is <u>True</u>. :^)

Explanation:

8 0
3 years ago
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Students in Dr. Branch's physics class were calculating the average time required for an assortment of objects to fall from the
adoni [48]
C is the answer lol can u give me brainliest
5 0
3 years ago
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