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Ivahew [28]
3 years ago
15

How are pure substances and mixtures distinguished?

Biology
1 answer:
Pepsi [2]3 years ago
3 0

Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. Hope this helps!

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Select all properties of NONMETALS.
AysviL [449]

Answer:

good insulators; poor conductors

brittle

malleable and ductile

good conductors of heat and electricity

26.98

protons/neutrons

Nobel Gases

Ion

Nucleus

negative

silicon and carbon

6 protons and 8 neutrons

6 protons and 7 neutrons

Atomic Number

Neutral atom

No, because protons identify the atom

2

brittle, shiny nd solid at room temperature, semiconductor

6

mass number

+2

-2

They only need one more electron

Negative ion

reactivity, ion formation

all your answers were correct

7 0
2 years ago
Suggest some method to<br>presevining forest habitan​
Alex73 [517]

Answer:

Taking care of our forests

Explanation:

Regulated and Planned Cutting of Trees

Control over Forest Fire

Reforestation and Afforestation: ...

Check over Forest Clearance for Agricultural and Flabitation Purposes

Protection of Forest

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8 0
4 years ago
Which of the following are part of the body’s first line of defense against pathogens?
Fed [463]

The answer is "D"

The body's first line of defense is also known as Innate immunity and incudes mucous membranes. Both the intact skin and mucous membranes of the body offer a high degree of protection against pathogens.

 A good example is the mucous membrane of the respiratory tract. It is lined up with cilia and covered with mucus. The coordinated beating of the cilia drives the mucus up to the nose and mouth where the trapped bacteria can be expelled.

(Lymph nodes and white blood cells belong to the second line of defense, not the first) 

3 0
3 years ago
Diet and stress are mostly examples of which type of factors?
shutvik [7]

Answer:

May be Nutritional but no sure

6 0
3 years ago
Read 2 more answers
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Alina [70]

Answer:

1.nucliec acid

2.lipids

3.protien

4.nucliec acid

5.carbohydrates

6.lipids

7.carbohydrate

3 0
3 years ago
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