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IgorLugansk [536]
3 years ago
15

Scientific ____ must be supported by observations and results from many investigations and are not absolute.

Biology
1 answer:
azamat3 years ago
3 0
Scientific methods must be supported by observations and results from many investigations and are not absolute.
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Rivers and streams are biodiverse ecosystems that are sensitive to change. please select the best answer from the choices provid
mylen [45]

It is true that rivers and streams are biodiverse ecosystems that are sensitive to change. Details about rivers and streams can be found below.

<h3>What is river and stream?</h3>

A river is a large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, oftentimes ending in another body of water, such as an ocean or in an inland sea.

On the other hand, a stream is a small river or a body of moving water confined by banks.

Rivers and streams are both freshwater ecosystems, hence, tend to respond to changes in their environment caused by anthropogenic activities.

Therefore, it is true that rivers and streams are biodiverse ecosystems that are sensitive to change.

Learn more about rivers and streams at: brainly.com/question/10904801

#SPJ4

6 0
2 years ago
What type of selection is occurring because baby's with low or high birth rates are less likely to survive?
shepuryov [24]
Stabilizing selection
6 0
3 years ago
A population of mussels was observed in a particular ecosystem. Crabs have recently been observed occupying this ecosystem, whic
Zina [86]

Mussels are molluscans and are freshwater animals. The change in the environment led to new traits of mussels, it underwent natural selection and the thick shells have high chances of survival.

<h3>What is natural selection?</h3>

Natural selection is a process of nature that eliminates the organism with less survival and unfit traits while selecting the organisms with better traits of survival in the altered conditions.

The arrival or the introduction of the crabs in the environment altered the previous habitat of the mussels and led to the adaptation of the better trait quality in the mussel species.

The trait of the thick shells underwent natural selection as they were favoured for the changed conditions. The mussel having thick shells have high chances of survival over thin-shelled mussels as the crab will find it hard to attack the thick-shelled mussels.

Therefore, option A. change in environment, option B. natural selection and option E. chances of survival are the correct statements.

Learn more about the natural selection here:

brainly.com/question/10715606

6 0
2 years ago
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What planet is closest to the moon right now
Andreas93 [3]
Right now it is Earth
8 0
2 years ago
I need help with quiz
lianna [129]

Answer:

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Explanation:

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