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olga2289 [7]
3 years ago
14

Why do arteries need to be thick, muscular, and elastic?

Biology
2 answers:
Valentin [98]3 years ago
8 0

blood flows at a high pressure, so if the arteries are thin and less muscular, the arteries can explode due to the pressure. so it needs thick and muscular properties so that it can withstand the increasing pressure of the flow of blood.

im not sure why it needs to be elastic. Hope it helped :)

Harman [31]3 years ago
7 0

high pressure blood basically


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Naturally occurring solid mixture of one or more minerals and organic matter
alina1380 [7]

The naturally occurring solid mixture of one or more minerals and organic matter is known as a Rock.

A rock is a naturally occurring substances that is a solid mixture of one or more minerals together with organic matter.

<h2>Further Explanation;</h2>
  • Rocks are classified based on the chemical composition, texture and the way they are formed.  One type of rock may change from one form to another through a rock cycle.
  • Rock cycle is the process through each various rocks change from one form to another, normally an interchange between the three major types of rocks.

There are three major classification of rocks:

<h3>Sedimentary rocks </h3>
  • Sedimentary rocks are types of rocks that are formed through accumulation of sediments at low temperatures in tectonic layers and sinks. These sediments includes; pebbles, shells, sand and other material fragments.  
  • The sediments accumulates in layers and then harden into rocks over a period of time.
  • Examples of sedimentary rocks include; limestone and conglomerate
<h3>Metamorphic rocks</h3>
  • These are types of rocks that are formed as a result of changes that occurs due to intense heat and pressure under the surface of the earth. They result from action of heat and pressure on other rocks that pre-existed.
  • These types of rocks are characterized by shiny crystals, ribbon-like layers among other features.
  • Examples of metamorphic rocks are marble and gneiss

<h3>Igneous rocks </h3>
  • These are types of rocks that are formed as a result hardening and cooling of magma from volcanic eruptions. Magma may cool inside the earth or when on the surface of the earth as a result of volcanic eruptions. The lava from this eruptions cools and hardens to form metamorphic rocks.
  • Igneous rocks are glass-like and shiny with no crystals. They may also have tiny spaces and holes due to gas bubbles trapped during the cooling process.
  • Examples of igneous rocks include obsidian and basalt.
  • The three types of rocks may be further classified in terms of chemical composition, texture and formation.

Key words: Rocks, types of rocks, chemical composition

<h3>Learn more about;</h3>
  1. Rocks and rock types; https://brainly.in/question/5987245
  2. sedimentary rocks; https://brainly.in/question/3259075
  3. igneous rocks; https://brainly.in/question/272012
  4. metamorphic rocks; https://brainly.in/question/1206219

Level; High school

Subject: Geography

Topic:  Rocks

sub-topic: classification of rocks

4 0
3 years ago
What is the difference between a species and a population?
lara [203]

Answer:

Organisms of the same species must live in similar climates, while organisms of the same population can live in different ecosystems with different climates.

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
8 0
2 years ago
A student plans to measure the circumference of a balloon at various temperatures to determine how temperature affects the volum
nignag [31]
I think the independent variable is the temperature, while the dependent variable is the size of the balloon. The factor that is held constant is the amount of air in the balloon. An identical balloon kept at the original temperature. Independent variable in an experiment is the variable that the experiment plans to change while the dependent variable is the variable whose value depends on the independent variable. 
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3 years ago
Which statement best illustrates a biotic or an abiotic factor that is often found in a city park?
ddd [48]

Answer:

Biotic: Plants

Abotic: Rocks

Explanation:

A biotic factor is something in an ecosystem or environment that is living. Some examples that could be found in a park are grass, flowers, trees, squirrels, pigeons, fish or people.

An abiotic factor is the exact opposite of a biotic factor: something in an ecosystem or environment that is not alive. Some examples that may be found in a city park include a park bench, a trash can, rocks, a playground, a pool, basketball court, temperature, and humidity.

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What are the 3 main parts of the
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Hormones, Cell receptor and glands

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