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Svetlanka [38]
3 years ago
15

Explain why crossing-over is an important source of genetic variation. written response

Biology
1 answer:
iren2701 [21]3 years ago
3 0

Answer:

When crossing over occurs, alleles are exchanged between homologous chromosomes, leading to new combinations of alleles.

Explanation:

Hope this helps!

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Why is a nutrient cycle on earth called closed system
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Answer:

<em>The nutrient cycle </em><em>is nature's recycling system. All forms of recycling have feedback loops that use energy in the process of putting material resources back into use. </em><em>Recycling</em><em> in ecology is regulated to a large extent during the process of decomposition.</em><em> Ecosystems employ biodiversity</em><em> in the food webs that recycle natural materials, such as mineral nutrients, which includes water. </em><em>Recycling in natural systems</em><em> is one of the many ecosystem services that sustain and contribute to the </em><em>well-being</em><em> of human societies.</em>

<h2>Explanation:</h2>

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I have Bolded important facts aswelll

4 0
3 years ago
Hello guys, Define wave length.I think this will be easy for u guys good day thank u​
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Answer:

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Explanation:

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4 0
3 years ago
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Uniform region occupies an area based on a homogeneous characteristic, for example, __________.
nikklg [1K]
A uniform region occupies an area based on a homogeneous characteristic is a true statement. Regions can also be based on ecological features and as well as the location of it region itself.
6 0
3 years ago
What is the name of the structure labeled X? (Make the word plural)
vagabundo [1.1K]

Answer: Centrioles

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3 years ago
The illustration shows one of the ways resources are removed from the deep sea. Describe what type of resources these are, inclu
just olya [345]

Answer:

Marine mining is a process that can be done by dredging the seabed and is used for the extraction of mineral resources from the seabed, which are non-renewable, with a negative impact on marine ecosystems.

Explanation:

The illustration shows a process of marine mining by dredging, where the resource extracted is of a mineral nature, like copper, zinc, silver and gold. Gravel used for construction can also be extracted from the sea. Mineral resources extracted from the sea are not renewable.

The process of marine mining can be harmful to the ecosystems there, so it must be a process that requires control and management from the ecological point of view.

Two possible consequences of not regulating marine mining are:

  1. <u><em>Destruction of the habitat of life forms present on the sea floor</em></u><em>, which endangers many species and even forces migration to more stable areas, with consequences on the food chains. </em>
  2. <em><u>Extinction of marine species that inhabit the seabed</u></em><em>. The flora and fauna of the sea floor usually have slow reproductive cycles and, in the case of fish, spawning takes place on the bottom of the sea. Mining endangers the reproductive cycles of the species, leading to induced extinction.</em>

Responsible and controlled mining activity can be useful for humans, while avoiding negative consequences on the ecosystems that exist at the seabed.

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