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Anit [1.1K]
3 years ago
5

List at least five organisms that are present un your biological community

Biology
2 answers:
grigory [225]3 years ago
8 0

Answer:

a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.

Explanation:

Nana76 [90]3 years ago
6 0

Answer:

Insects, fish, mammals, birds, & trees.

Explanation:

In biology, the term species refers to all organisms of the same kind that are potentially capable, under natural conditions, of breeding and producing fertile offspring. The members of a species living in a given area at the same time constitute a population. All the populations living and interacting within a particular geographic area make up a biological (or biotic) community. The living organisms in a community together with their nonliving or abiotic environment make up an ecosystem.

Thank you for letting me help you,  If you have any more questions I'd be glad to get you the most brainiest answers!

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Why are there lefties (and righties)?
malfutka [58]

Answer:

These changes are often brought about by environmental influences and can affect how a baby grows. These gene-expression differences could affect the right and left parts of the spinal cord differently, resulting in lefties and righties.

Explanation:

Most people — about 85 to 90% — are right-handed, and there's no population on Earth where left-handers are in the majority.

That uneven split has had some historic downsides for lefties. They've had to use scissors, desks, knives and notebooks that were designed with righties in mind. Many lefties were forced, against their natural inclination, to write with their right hands (including some famous examples like King George VI of England). They've been discriminated against and eyed with suspicion, as evidenced in the language used to describe lefties. "Right" in English obviously also means "correct." The etymology of the word "sinister" can be traced back to the Latin word for "left."

While the stigma against left-handedness has faded in most places, scientists are still confounded by the righty-lefty divide. Researchers are still trying to understand what makes people prefer one hand over the other and why righties dominate.  

On an individual level, handedness might be determined at the earliest stages of development. Scientists reported in 2005 in the journal Neuropsychologia that fetuses will show a hand preference in the womb (by sucking the thumb of one hand), a proclivity that continues after they're born.  

While there's no righty or lefty gene, DNA does seem to play a role in handedness. In a recent study published in Brain: A Journal of Neurology, researchers at the University of Oxford looked at the DNA of about 400,000 people in the U.K. and found that four regions of the genome are generally associated with left-handedness. Three out of these four regions were involved in brain development and structure. Some researchers hope that studying the biological differences between lefties and righties could shed light on how the brain develops specializations in its right and left hemispheres.  

The right stuff

Trying to answer the question of handedness from an evolutionary perspective is also complicated. Researchers can detect handedness in the archaeological record by looking for certain anatomical traits in prehistoric skeletons, such as asymmetry in the size and density of arm bones, and by examining prehistoric tools.  

"If you know how the tool was held and how it was used, then you can look at the wear traces" to determine if a lefty or righty used the tool, said Natalie Uomini, a senior scientist at the Max Planck Institute for the Science of Human History in Germany. Scientists can even look at the direction of diagonal scratches on fossilized teeth to see which hand people were using to tear off meat or animal hides in their mouths.

Righties have dominated for as far back in the archaeological record as researchers can see, about 500,000 years, Uomini said. Neanderthals, our now-extinct human cousins, were also strongly right-handed.  

That makes humans pretty strange among animals. Several nonhuman species, such as the other great apes, are individually handed, but the split between righties and lefties is typically closer to 50-50.

What caused our extreme bias toward right-handedness to evolve and persist? From an evolutionary perspective, if right-handedness evolved because it had some kind of advantage, then you might expect left-handers to disappear completely, Uomini told Live Science. She added that there are some disadvantages to being left-handed, such as higher frequencies of work accidents. Researchers also linked left-handedness to learning disabilities, in a study published in 2013 in Brain: A Journal of Neurology.  

But there's a leading theory to explain why left-handers have maintained a constant minority: the fighting hypothesis.  

"The idea is that in hand-to-hand combat, or in combat with weapons, there is an evolutionary advantage to being a minority left-hander," Uomini said. "If you're left-handed, you have a surprise advantage because most people are used to fighting against right-handers." That lefty advantage has been shown in one-on-one sports like fencing, scientists reported in 2010 in the journal Laterality.  

If that hypothesis is correct, it would mean that even though the downsides to left-handedness were significant enough to keep lefties in the minority, lefties' advantage in combat at least gave them a fighting chance against eventual extinction.

7 0
3 years ago
Read 2 more answers
Using "i" statements: O A. Always makes your point to the other person OB. Starts arguments OC. Helps eliminate name-calling OD
irinina [24]

Answer:

aa is a good place to start and 3333333333333333 to get out of Daviess and you will pay renttry a lot more than that you and your family and you can afford to be a little more hour than

6 0
3 years ago
What is a major contributing factor to dissolved nitrogen found in rain
Damm [24]
Emissions from industries as they burn fossil fuels
I believe so (: 
5 0
3 years ago
Which of the following describes aristolles model of the solar system select three answers
amid [387]

Explanation:

Aristotle's model shows the planets in the celestial realm moving around the Earth in an orderly manner, in perfect circles and with uniform motion-neither speeding up nor slowing down.

7 0
2 years ago
Need help with these questions answer what you can
OlgaM077 [116]

Answer 1:

The mutation shown is point mutation.

A point mutation can be described as a type of mutation in which only a single nucleotide of a sequence is either:

  • changed
  • added
  • deleted

The addition of the single nucleotide will cause the entire open reading frame to be changed. The amino acid sequence will change entirely from the position where the insertion mutation occurs. This is because the code for making amino acids works on a three base pattern. The reading of the three bases will be altered completely by the addition of just a single nucleotide.

Answer 2:

No, the resulting protein will not be altered.

The genetic code occurs in a linear sequence with triplet format. The change in a single base will cause the wrong amino acids to be formed. However, if the different code is common for the same amino acid then there will be no effect on the amino acid being formed.

<em>For example, the code GUA makes the amino acid Valine. If a mutation occurs and the code becomes GUU instead of GUA, then the resulting amino acid formed will also be Valine. Hence, there will be no alternation in the formation of the protein.</em>

Answer 3:

Melanoma cancer is the type of skin cancer which is associated with cancer from sun light. It is mainly caused due to the harmful ultraviolet rays which act as a mutagen.

<em>The mutations might keep coming back because although the growth have been removed, the other skin cells of the body might still have the mutation in them. As a result, growth will be seen again in the skin cells which might occur again and again. </em>

<em />

Explanation:

7 0
3 years ago
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