1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dalvyx [7]
3 years ago
14

a 1 liter jar is filled with water right to the top a rock is then dropped in the jar and 400 ml of water is displaced .what is

the volume of the rock
Biology
1 answer:
Leno4ka [110]3 years ago
6 0
Volume is four hundred
You might be interested in
List three of the major agents of<br> erosion.
KatRina [158]

Answer: wind, water, and gravity.

Explanation:

6 0
3 years ago
Read 2 more answers
When you perspire on a hot humid day drinking water will restore?
OverLord2011 [107]
Fluids, water, You loose salt water and electrolights when you perspire, when you drink water it doesn't have salt or electrolights it just has water so it can only replace your water
4 0
3 years ago
The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, well-being, and functionin
sdas [7]

Answer:

A) stratum basale.

Explanation:

The epidermal layer consists of five layers. This is not having any blood vessels and known as avascular. The four-layer starting from stratum basale to stratum corneum is referred to as thin skin. But the skins of foot and palm has another layer called stratum lucidum. This layer forms the five layers of the epidermis.

The stratum basale is the deep layer of the epidermis. Below this layer dermis is present. This layer consists of basal cells which are precursors of keratinocyte cells. The stratum basale is a single layer cell and it undergoes continual mitosis. So that this cell produces new cells and these new cells replace the other older cells above it.  

As the basal cells are precursors of keratinocytes, they produce all keratinocytes of the epidermis.  

Two other types of cells are produced from this layer - Merkel cell, and melanocyte. Merkel cells act as touch receptors and melanocytes produce melanin pigments.

7 0
3 years ago
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
Explain how this discovery demonstrated one of the strengths of models
zubka84 [21]

This discovery demonstrated one of the strengths of Models may be used to expect or provide an explanation for occasions is the statements as it should be describe models in technological know-how.

<h3>What is the importance of models?</h3>

Models have usually been vital in technological know-how and stay used to check hypotheses and expect information. Often they may be now no longer correct due to the fact the scientists of the models.

  • Scientific modeling is likewise referred to as a systematic activity. The goal of the modeling can apprehend easier, define, quantify, visualize.
  • Normally Science is a topic which can not genuinely provide an explanation for furthermore it's miles to be interpreted.
  • There are one-of-a-kind sorts of gift a number of them are mathematical , graphical fashions, operational , etc.
  • Scientific are growing withinside the fields of technological know-how schooling and Philosophy of schooling.

Read more about the models:

brainly.com/question/24414910

#SPJ1

7 0
2 years ago
Other questions:
  • You have a rock with a volume of<br> 30cm and a mass of 60g. What is its density?
    11·2 answers
  • PLEASE HELP!!
    9·2 answers
  • This is when a group of animals live together and help each other, nest, find food, work, and for protection.​
    9·1 answer
  • The concentration of calcium ion in blood is found to be 1.21 mmol/L. What is this concentration in mEq/L?
    11·1 answer
  • How would a scientist study the relationship between the Tiktaalik roseae and modern fish and tetrapods?
    10·2 answers
  • What you mean by accessory pigments? ​
    15·1 answer
  • A eukaryotic cell carries out phagocytosis and engulfs a gram-negative bacterial cell, which ends up in the resulting food vacuo
    9·1 answer
  • Which of these is not a study of science<br> Geography<br> Zoology<br> Botany<br> Biology
    13·2 answers
  • Complete this sentence. _____ affects the angle of sunlight on Earths surface.
    8·2 answers
  • I WILL GIVE BRAIEST PLS HELP 5 B LANGUAGE ARTS Module 11 / Proof and Edit 1. What order should you use to list your sources? the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!