7. The diagram illustrates the differences between the skulls and brain volumes of three extinct hominins. In each drawing in the diagram, the shaded area inside the skull indicates the size of the brain. Based on the relative size of the brain, which species is capable of more complex behavior, such as the use of tools? A. Australopithecus africanus B. All three species were capable of equivalent complex behaviors. C. Homo erectus D. Homo neanderthalensis

Answers

Answer 1

Answer: The best answer to the question above would be letter A. All species that were mentioned in the choices were capable of equivalent complex behaviors. The Australopithecus africanus probably used simple tools (which is an indication of complex behavior) such as sticks for hunting. The erectus and neanderthalensis developed more advanced use of tools.

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A uniform Capillary tube closed at one end Contain dry air trapped by a thread of mercury 8.5x10 m long when the tube was held horizontally, the length of the air Column 5.0X10^2 Wher it held verti cally with the closed end downward the length was 4.5x10^2m Determine the value of atmospheric pressure take g=10m/s, density of mercury (1.36×10^4kg/m)

Answers

Answer:

To determine the value of atmospheric pressure, we can use the concept of hydrostatic pressure. By comparing the lengths of the air column in the capillary tube when held horizontally and vertically, we can equate the pressure difference to the difference in height of the mercury column. Using the given values and the density of mercury, we can calculate the atmospheric pressure.

Please answer the circled questions, I will give you brainliest

Answers

Answer:

yo so if nobody helps ill gladly take the brainliest

Explanation:

Energy from the sun reaches Earth mostly by........... A)Conduction B)Convection C) Radiation D) Thermal Expansion.

Answers

Energy from the sun reaches Earth mostly by Radiation

The energy from the sun reaches Earth mostly by radiation. The correct answer to the question is option C

How does energy from sun reaches the earth?

To determine the correct answer to the question, let us remind ourselves about how heat energy is been transferred. This is shown below:

Heat is a form of energy and can be transferred by:

Conduction: This happens mostly in solids and it involves direct contacts,
Convection: This happens mostly in liquids or gas in which a cooler part becomes hot by circulation of the hotter particles from the liquid or gaseous materials
Radiation: This involves the transfer of heat in the form of electromagnetic waves which requires no medium

From the above information, we can see that electromagnetic transmission (which includes light) requires no medium.

Thus, we can say that the energy from the sun reaches the earth by radiation. The correct answer to the question is option

Learn more about radiation:

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Air pressure decreases asa. velocity increases.
b. elevation increases.
c. acceleration decreases.
d. gravity increas

Answers

Elevation increases

Answer:

As elevation increases, air pressure decreases, molecules spread out, and air temperature cools.

Explanation:

An oxygen atom picks up two additional, free floating electrons. Is the charge of the newly formed oxygen ion positive, negative or neutral?

Answers

Answer:The newly formed oxygen ion is negatively charged.

Explanation:

Cation : These are species of ions which carries positive charge that is number of protons are greater than the number of electrons.

Anion:These are species of ions which carries negative charge that is number of electrons are greater than the number of protons.

$O+2e^-\rightarrow O^(2-)$

When an oxygen atom gains two electrons it develops the charge of negative charge and forms anion.

i believe it would be negative as electrons carry negative energy

hope this helps :)

When a can is crushed did it undergo a physical change

Answers

because even though the object got crush and misshape it still has the same identity. the identity never change

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