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Flauer [41]
3 years ago
6

Which of the following statements is true about mutations?

Biology
2 answers:
Blababa [14]3 years ago
7 0

Answer:

A. It is a source of genetic variation

Molodets [167]3 years ago
4 0
It is a source of genetic variation
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Some one please help!! I am looking for a good short definition if possible:) What is a front?
xeze [42]

Answer:

The boundary between two air masses that have different temperatures or humidity. In the mid-latitude areas of the Earth, where warm tropical air meets cooler polar air, the systems of fronts define the weather and often cause precipitation to form.

Explanation:

Scientific definition for front

4 0
3 years ago
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Why is water from lakes, rivers, swamps, called free water?
alexdok [17]
Because the government cant tax it or  tell it what to do. 

but really, it's not considered property (ponds are) so you can't say "no trespassing" on a body of water, only the surrounding land. comment if you need more info
6 0
3 years ago
Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the collateral ganglia. a
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Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the adrenal glands.

<h3>What is adrenal gland?</h3>
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  • Problems with one, both, or other glands, such as the pituitary gland, can result in diseases of the adrenal glands.
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Learn more about adrenal gland here:

brainly.com/question/1406904

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8 0
2 years ago
Explain how the reduction in biodiversity can effect the ecological balance in the dam
hodyreva [135]
<span>Damming a river has a variety of effects on the freshwater ecosystem, more than just altering the flow from A to B.  Dams create calm bodies of water, changing overall temperature regimes and sediment transport, leading to conditions which tend to favour generalist species. Loss of specialist species, particularly endemics, changes the community structure and leads to biotic homogenization.  A dam will withhold sediment in the reservoir, not just decreasing the amount of substrate available to local freshwater species, but even impacting diadromous, estuarine and marine species much further downstream.  The competition between resident species for food and breeding sites will increase as damming isolates populations, and perhaps more importantly, damming completely restricts migratory fish species.  Isolation may lead to decreases in genetic diversity and therefore puts species at greater risk from disease.  All of these effects may be exacerbated by changes in the surrounding land use.  Overall, damming river flow will lead to both a loss of native species, but also an increase in exotic species which are more likely to become established in degraded habitats. For this reason, dams are one of the greatest global threats to freshwater biodiversity.</span>
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3 years ago
A large section of the lower troposphere with uniform temperature and humidity is called _______.
Lilit [14]

Answer:

D. an air mass

Explanation:

5 0
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