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astraxan [27]
3 years ago
9

The word topsoil is commonly used, but not always correctly. the proper definition is ________.

Biology
1 answer:
Kaylis [27]3 years ago
8 0
The topsoil is the upper and outermost layer of soil, usually the top 2 inches to 8 inches. It contains the highest concentration of organic matter and microorganisms. Topsoil is used as the medium for all plant growth, whether it is a lawn, garden or prairie.
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3. Series of canals used to transport materials in the cell​
il63 [147K]
The series of canals used to transport materials throughout the cytoplasm in the cell​ is Endoplasmic reticulum. It comprises of the rough endoplasmic reticulum, with the ribosomes attached to its surface and the smooth endoplasmic reticulum( no ribosomes attached)
4 0
3 years ago
Early in genetic research, it was suggested that the genetic code might be made up of overlapping codons in which the last two b
yuradex [85]

The genetic code is called non-overlapping because adjacent codons can not overlap, whereas in this case, the code is overlapping.

<h3>What does 'overlapping code' mean?</h3>

The genetic code does not overlap because the same nucleotide in the sequence cannot be used to encode two different codons.

In genetics, overlapping refers to a feature of the genetic code associated with how this nucleotide code is read.

In conclusion, the genetic code in this case is overlapping.

Learn more about the genetic code here:

brainly.com/question/16914106

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4 0
1 year ago
What would happen to an ecosystem if an invasive
MrRa [10]

Explanation:

the top predator is removed from the delicate balance of any particular ecosystem, there may be disastrous effects for the other plants and animals that inhabit the environment.

When a top predator is removed from an ecosystem, a series knock-on effects are felt throughout all the levels in a food web, as each level is regulated by the one above it. This is known as a trophic cascade. The results of these trophic cascades can lead to an ecosystem being completely transformed. The impacts trickle down through each level, upsetting the ecological balance by altering numbers of different animal species, until the effects are finally felt by the vegetation

When a top predator is no longer present, populations of their herbivorous prey begin to boom. Without a top predator to regulate their numbers, these animals put a great deal of pressure on the existing vegetation that they require for food and can destroy large amounts of plant life, such as grasses and trees. This then causes further problems, such as soil erosion and loss of animal habitat. Eventually, humans are also impacted due to the resulting lack of soil fertility and clean water that depend on these plants.

Another problem involving the loss of vegetation is the competition that is created between herbivorous species. Competition between species for the remaining plant life is high and weaker species lose out to stronger ones, leading to the potential loss of weaker animals, as well as plant species. Increased competition, therefore, leads to a lack of biodiversity. In contrast, top predators often have varied diets, which means they can pursue a new food source if one is running low, preventing the first source from being eradicated completely. This is one of the ways that top predators are able to maintain biodiversity and the balance of an ecosystem.

The presence of a top predator also helps to maintain balance in an ecosystem by influencing the behaviour and movements of its prey through the fear of being caught. Animals that are prey to a top predator will move around in order to avoid it. This prevents plants and animals in any particular area of an ecosystem from being over-consumed, preserving food sources and habitats. In the absence of top predators, this regulation disappears, allowing certain areas of vegetation to be destroyed completely.

6 0
3 years ago
Read 2 more answers
Why is it important for a cell to perform checks after DNA replication?
zimovet [89]

Answer:

A. If errors are not removed from areas with a gene, then the resulting proteins could be affected.

Explanation:

Since the genes in DNA contain instructions for the synthesis of proteins, any mistakes in areas of a gene will change how proteins are made.

It is important for cells to perform checks in order to catch these mistakes, because otherwise, RNA will be carrying the wrong instructions to create a protein.

4 0
3 years ago
The medical term ____________________ describes the swelling of the optic nerve at the point of entrance into the eye through th
quester [9]

The optic nerve swelling as it enters the eye through the optic disk is known medically as papilledema.

<h3>What results in eye papilledema?</h3>

Increased pressure from the brain and CSF on the optic nerve causes papilledema. The nerve swells as a result of the pressure as it enters the eyeball at the optic disc.

<h3>What causes papilledema most frequently?</h3>

The most frequent causes of papilledema without IIH were cerebral venous sinus thrombosis, intracranial tumor, and intracranial hemorrhage.

<h3>What occurs when a person has papilledema?</h3>

The following list of papilledema symptoms is possible: loss of vision or blurred vision The optic nerve, which regulates your vision, is subjected to physical pressure as a result. Blurred vision or visual loss in one or both eyes are common symptoms of optic nerve compression.

learn more about papilledema here

<u>brainly.com/question/15197155</u>

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7 0
2 years ago
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