Que características poseen los babuinos que no poseen los Lemures

Answer:

Opposing thumbs, expressive faces, complex social systems: it's hard to miss the similarities between apes and humans. Now a new study with a troop of zoo baboons and lots of peanuts shows that a less obvious trait -- the ability to understand numbers -- also is shared by humans and their primate cousins.

"The human capacity for complex symbolic math is clearly unique to our species," says co-author Jessica Cantlon, assistant professor of brain and cognitive sciences at the University of Rochester. "But where did this numeric prowess come from? In this study we've shown that non-human primates also possess basic quantitative abilities. In fact, non-human primates can be as accurate at discriminating between different quantities as a human child."

"This tells us that non-human primates have in common with humans a fundamental ability to make approximate quantity judgments," says Cantlon. "Humans build on this talent by learning number words and developing a linguistic system of numbers, but in the absence of language and counting, complex math abilities do still exist."

Cantlon, her research assistant Allison Barnard, postdoctoral fellow Kelly Hughes, and other colleagues at the University of Rochester and the Seneca Park Zoo in Rochester, N.Y., reported their findings online May 2 in the open-access journal Frontiers in Comparative Psychology. The study tracked eight olive baboons, ages 4 to 14, in 54 separate trials of guess-which-cup-has-the-most-treats. Researchers placed one to eight peanuts into each of two cups, varying the numbers in each container. The baboons received all the peanuts in the cup they chose, whether it was the cup with the most goodies or not. The baboons guessed the larger quantity roughly 75 percent of the time on easy pairs when the relative difference between the quantities was large, for example two versus seven. But when the ratios were more difficult to discriminate, say six versus seven, their accuracy fell to 55 percent.

That pattern, argue the authors, helps to resolve a standing question about how animals understand quantity. Scientists have speculated that animals may use two different systems for evaluating numbers: one based on keeping track of discrete objects -- a skill known to be limited to about three items at a time -- and a second approach based on comparing the approximate differences between counts.

Explanation:

When an action potential arrives at an axon terminal at a neuromuscular junction, it causes the opening of _______ channels, increasing the concentration of this ion within the cell, which ultimately triggers fusion of neurotransmitter vesicles with the presynaptic cell membrane.

why chlorophyll b is not found in alll eukaryotes

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Lionfish are native to the tropical waters of the Indo-Pacific. What conclusions can be made about the impact of ocean warming on the range of lionfish and, therefore, on biodiversity?

Rising ocean temperatures have expanded the range of the lionfish; with little competition, it consumes smaller fish, reducing biodiversity.
Global warming has forced the lionfish to warmer waters where it is able to mate with native fish, increasing biodiversity.
Climate change has restricted the habitat of lionfish. It has become an endangered species, reducing biodiversity.
Lionfish thrive in high carbon dioxide environments; they eat all of the native species in the area, reducing biodiversity.

What’s the answer to this?

When the size of population increases and people own..... more goods there is an effect on​

What can a deficiency of growth hormone during bone formation cause?.

hello humans ~
Which among the following organelles synthesizes lipids?

A. Smooth Endoplasmic Reticulum

B. Rough Endoplasmic Reticulum

C. Golgi apparatus

D. Lysosome​

Which of the following organisms is located only in the 3rd trophic level of the soil food web? a. bacteria b. fungi c. protozoa d. nematodes please select the best answer from the choices provided a b c d

Pls help me with this question

Which renewable energy resource comes from burning plant material.

Which process could be used by breeders to develop tomatoes with a longer shelf life and to develop cows with increased milk production

The picture above represents a small section from the periodic table. Which of the elements has chemical properties most similar to element X?

A.
Element 1

B.
Element 2

C.
Element 3

D.
Element 4

what is leucosolinea?​

Which of the following might occur if people fail to conserve water? a. Increased sewage system failures b. Increased numbers of natural pollution filters c. Increased water supply d. Increased wildlife habitats.

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The digestive system doesn’t work alone. After nutrients are absorbed in the small intestine, they pass through other body systems. Drag the correct words to complete the sentences.

[respiratory] [lymphatic] [endocrine] [circulatory]

Nutrient distribution depends on the[ ? ]
system to deliver nutrients to cells around the body through the bloodstream. The [ ? ]
system also plays a part by supplying the oxygen used in cellular respiration. Respiration is the process of breaking down nutrients for energy.

How many single chromosomes are in a human zygote?.

Carbohydrate stored in the muscles of a marathon runner is converted to available glucose during a race. This conversion is
controlled by the hormone
(A)Adrenalin
(B)insulin
(C)thyroxin
(D)testosterone

Second exposure to the pathogen

A-leads to very rapid production of antibodies
B- alerts memory cells to divide quickly
C - leads to the destruction of the pathogen before the individual feels infected
D - all of the above

When the color of the light changes, the number of light red kidney beans will also change Write a hypothesis about the effect of the red light on the population. Use the "if . . . then . . . because . . ." format, and be sure to answer the lesson question: "How does natural selection change the phenotypes within a population over time?"

Answer me:

1. Identify the correct statement about the magma.
A. Typical magma temperatures exceed 10,000 degrees Celsius.
B. Magma always comes from the lower mantle.
C. Magma never contains dissolved gases.
D . Magma forms after magma melts

2. Very explosive volcanoes tend to have___________
A. Gases rich in sulfur dioxide
B. Low viscosity magma
C. gentle, sloping sides
D. High viscosity

3. Which of these statements is correct?
A. When a rock melts different minerals melt at the same temperature
B. If water is present, rocks will melt at a higher temperature.
C. Under high-pressure rocks melt at a lower temperature
D . Magma that crystallizes Form igneous rock.

4. It is the magma that is usually found at subduction zones.
A. Andesitic Magma
B. Basaltic Magma
C. Rhyolitic Magma
D. A & B

5. Which types of magma contain the least amount of SiO2?
A. basaltic
B. Candesitic
C. felsic
D. rhyolitic

6. What is molten rock that has formed deep within the Earth?
A. Hot Spot
B. Lava
C. Magma
D. Volcano

7. As the temperature of lava increases, it/s ________
A. begins to harden
B. viscosity decreases
C viscosity increases
D. sit can flow a much short distance

8. What makes magma different from lava?
A. color
B. composition
C .location
D . temperature

9. The composition of magma determines its _____.
A. color
B. darkness
C. viscosity
D. none of the above

10.Which one of these does NOT affect the temperature at which magma forms?
A. water
B. pressure
C.viscosity
D. Composition of material
_____________________
B. True Or False
1.. Lava with high silica content is less viscous to travel far and tends to break up as it flows.

2. Magmas with high silica content are more viscous than those with low silica content.

3.Lava with less silica content has a high viscosity that can travel a great distance, forming a thin sheet.

4. Lava with a low amount of gas as it rises has a low viscosity that it piles up at a vent resulting in a dome.

5.. Silica is a compound of silicon (SiO2)

6. The characteristic of magma that mainly determines its explosiveness is silica content.

7.A thick layer of volcanic ash can be heavy enough to collapse the roofs of buildings because ash consists of tiny fragments of rocks that become heavy as they pile up.

8. Lava with a low amount of gas and high silica content is very viscous and does not flow out at all

9. Lava with high temperature has high viscosity.

10. The viscosity of magma increases with temperature.​

Which of the following is not a possible consequence of surface mining? a. increased pollution b. improved ecosystem health c. destruction of flora and fauna d. erosion of soil

how does gel electrophoresis separate DNA? and how is genetic engineering used to treat genetic diseases??

Which type of mutation plays the most important role in increasing the number of genes in the gene pool?

Changes in nucleotide sequence that lead to natural selection removing the allele from the population
Point mutation with a change in one base resulting in a harmful phenotype
Rearrangement of gene loci due to deleting or disrupting chromosomes
Gene duplication allowing for mutations to accumulate and expand the genome over generations

True or false: The carrying capacity of a given geographic region for a single population can change over time.

The endosymbiotic theory explains the:____.
a. Evolutionary relationship between animals, plants, and fungi.
.b Origins of mitochondria and chloroplasts in eukaryotes.
c. Method of reproduction in protists.
d. Origin of the first prokaryotic cells.

18. Does the blood of the mother and the baby ever mix?

How are molecules ,compounds and pure substances related

hello humans ~
Living organisms which are invisible to the niked eye are called _________ .

Particles
Molecules
Microorganisms
Macroorganisms​

Wavy bands of light and dark minerals visible in gneiss bedrock probably formed from the:____.
A) cementing together of individual miner grains.
B) cooling and crystallization of magma.
C) evaporation of an ancient ocean.
D) heat and pressure during metamorphism.

Which of these functions of life refers to
maintenance of an internal balance?