Which system consists of nerves that initiate communication?

Answers

Answer 1
Answer: Peripheral nervous system consists of nerves that help in communication among different parts of the body. In nervous system nerves are used to take and deliver messages. These messages are taken from different parts of the body to brain and these nerves are spreading all over the body.
Answer 2
Answer:

The main actor in the neurological system's action is the nerve cell, or neuron. It transmits information chemically and electronically. Information is transferred within the neuron through the movement of an electrical charge, or impulse. It is the peripheral nervous system that initiates communication.

The nerves that emerge from the brain and spinal cord make up the peripheral nervous system. The CNS and the body components are connected through a network of nerves. All of the body's parts are connected by nerves that emerge from the spinal cord and make up the peripheral nervous system.

The PNS's primary functions are voluntary actions including eating, walking, and making facial expressions.

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How is weathering related to the geologic cycle

Answers

Weathering is the breaking down of rocks, soil and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters.

Which changes occur in the composition of the earths layers from the surface to the core

Answers

Answer:

B. The material is cooler and denser.

Explanation:

The earth is made up of three layers, the crust, the mantle and the core. Each layer has different characteristics and temperatures, becoming warmer and less dense as it approaches the core.

Man has never reached the core of the earth, but the study of the internal structure of the planet is possible thanks to the studies of geophysicists, who are dedicated to the study of seismology. They observe the phenomena of seismic waves and rely on apparatus to define the characteristics of each layer.

  • Earth's crust: Most superficial layer, relatively thin structure and very rocky.
  • Mantle: Located below the crust, it has solid properties.
  • Core: Earth's warmest, least dense layer.
The mantle is the least hottest

Looking at the periodic table, which of these elements has the smallest atomic radius?A. sodium
B. potassium
C. hydrogen
D. lithium

Answers

Answer: C. hydrogen

Explanation:

Atomic radius of an atom is defined as the total distance from the nucleus to the outermost orbital of electron.

On moving from top to bottom, there is an addition of shell around the nucleus and the outermost orbital gets far away from the nucleus and hence, the distance between the nucleus and outermost orbital increases.

This in turn increases the atomic radii of the element from moving top to bottom in a group.

H:1:1s^1

Li:3:1s^22s^1

Na:11:1s^22s^22p^63s^1

K:19:1s^22s^22p^63s^23p^64s^1

hydrogen which has 0.79

Salt seems to disappear when it is poured into water. Use the terms mixture,solution, and dissolve to explain what happens

Answers

To solve this we must be knowing each and every concept related to solution. Therefore, the term used for the given salt in water is solution.

What is solution?

A solution is a uniform mixing comprising two or more parts. It possesses particle-level homogeneity. People usually conceive of it as a liquid containing a solid, liquid, or gas dissolved inside it. This is not totally correct.

The component of such a solution that absorbs the other component is referred to as the solvent. The majority of the solution is made up of a solvent. A sugar solution in water, for example, is solid inside the liquid. Sugar is indeed the solute in this case, while water is indeed the solvent. The term used for the given salt in water is solution.

Therefore, the term used for the given salt in water is solution.

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The salt desolves into the water which forms a solution which is called a mixture.

Given the following equation: 8 Fe + S8 —> 8 FeS what mass of iron is needed to react with 5.65 mol of sulfur S8

Answers

Answer:

2522g

Explanation:

8Fe + S8 —> 8FeS

From the question,

8moles of Fe required 1mole of S8.

Therefore, Xmol of Fe will require 5.65mol of S8 i.e

Xmol of Fe = 8 x 5.65 = 45.2moles

Now we need to covert 45.2moles to gram. This is illustrated below below:

Molar Mass of Fe = 55.8g/mol

Number of mole of Fe = 45.2moles

Mass of Fe =?

Mass = number of mole x molar Mass

Mass of Fe = 45.2 x 55.8

Mass of Fe = 2522g

Therefore, 2522g of Fe is needed for the reaction.

Which countries participated in the Equilant cruises?France
Brazil
United States
Japan
Chile
USSR

Answers

Answer:

ussr us france and brazil

Explanation: